1 . একটি বেলনের বক্রতলের ক্ষেত্রফল 100 বর্গ সে. মি. এবং আয়তন 150 ঘন সে. মি.। বেলনের ভূমির ব্যাসার্ধ কত?  

• A. 5 সে. মি.
• B. 4 সে. মি.
• C. 3 সে. মি.
• D. 6 সে. মি.

Answer: Option C

Explanation:

2 . The difference between √150 and √54 is--

• A. 2√6
• B. 16√6
• C. 9√6
• D. 6√2
• D. 8√6

Answer: Option A

Explanation:

3 . In a class of 150 students 90 students have taken Finance(F), 75 students have taken Banking(B) and 55 students have taken Economics(E). 10 students have taken F and E but not B, 15 students have taken F and B but not E and 25 students have taken B and E but not F. Find the number of students who have taken all the three courses.

• A. 20
• B. 15
• C. 10
• D. 25
• D. None of these

Answer: Option C

Explanation:

4 . Let A, B and C shares profit at the ratio of 2 : 3 : 7 and A and B together get Tk.1500 less than C gets. How much A will get:

• A. 2000
• B. 1200
• C. 1500
• D. 750

Answer: Option C

Explanation:

5 . Saif, Dr. Nazma and Shakil divided a sum of money among themselves in the ratio 2 : 3 : 7. Find the share of Saif if the total sare of Saif and Dr. Nazma together is Tk.1500 less than that of Shakil?

• A. Tk.2000
• B. Tk.1200
• C. Tk.1500
• D. Tk.2500
• D. None of these

Answer: Option C

Explanation:

6 . One-half of the employees of a company earns over Tk.18000 per month. One-third of the remainder earns between Tk 15000 to Tk.18000. What part of the staff earns below Tk.15000?

• A. one-sixth
• B. two-thirds
• C. 50%
• D. 10%
• D. one-third

Answer: Option E

Explanation:

7 . If two planes leave the same airport at 1:00 pm, how many miles apart will they be at 3:00 pm if one travels directly north at 150 mph and the other travels directly west at 200 mph?

• A. 50 miles
• B. 100 miles
• C. 500 miles
• D. 700 miles
• D. None of these

Answer: Option C

Explanation:

8 . Mr. Jaman is insured completely for Tk.150000 of damages to his machinery. For any damage over Tk.150000 the insurance co. will pay Tk.150000 plus 15% of the rest of the damage amount. For a recent accident, Mr. Jaman was paid Tk.156000 by the insurance co. what was the total amount of the damag estimated?

• A. Tk.104000
• B. Tk.90000
• C. Tk.40000
• D. Tk.80000
• D. None of these

Answer: Option C

Explanation:

9 . The period from AD 1066 to 1500 is known as-

• A. The Old English Period
• B. The Middle English Period
• C. The Anglo Saxon Period
• D. The Victorian Period

Answer: Option B

Explanation:

10 . A train 150 m long crosses a milestone is 15 seconds and crosses another train of the same lengh travelling in the opposite direction in 12 seconds. The speed of the second train in km/hr is.

• A. 52
• B. 56
• C. 54
• D. 58

Answer: Option C

Explanation:

11 . The price of a coat in a certain store is tk 500. If the price of the coat is to be reduced by tk 150, by what percent is the price to be reduced?

• A. 10%
• B. 15%
• C. 20%
• D. 30%

Answer: Option D

Explanation:

12 . How many multiples of 7 are there between 100 and 150?

• A. 7
• B. 9
• C. 16
• D. 4

Answer: Option A

Explanation:

13 . A train of length 150 m takes 10 seconds to cross another train 100 m long coming from the opposite direction . If the speed of first train is 30 km / hr, what is the speed of second train?

• A. 48km /hr
• B. 54 km / hr
• C. 60 km / hr
• D. 72 km / hr

Answer: Option C

Explanation:

14 .  বার্ষিক শতকরা 6 টাকা হার চক্রবৃদ্ধি মুনাফায় 15000 টাকার 3 বছরের চক্রবৃদ্ধি মুনাফা কত?

• A. 1865.30
• B. 2532.40
• C. 2865.24
• D. 2928.40

Answer: Option C

Explanation:

15 . After getting two successive discounts, a shirt with a list price of 150 taka is available at 105 taka. If the second discount is 12.5%, find the first discount.

• A. 30%
• B. 25%
• C. 20%
• D. 35%

Answer: Option C

Explanation:

16 . Pens that used to cost Tk. 150 for a package of 3 now cost Tk. 300 for a package of 5. What is the percent increase in the price of these pens?

• A. 15%
• B. 20%
• C. 25%
• D. None

Answer: Option B

Explanation:

17 . In a certain town, the ratio of the number of rented residences to the number of owned residences is 7 : 4. Those are the only two kinds of residences in this town. If there are 150 more rented than owned residences in this town, what is the total number of residences in the town?

• A. 200
• B. 350
• C. 550
• D. 700

Answer: Option C

Explanation:

18 . Train X covers a distance of 150 km in 2 hours. Train Y covers a distance of 135 km in 3 hours. What is the ratio of speed of train X to train Y?

• A. 3 : 2
• B. 5 : 3
• C. 7 : 4
• D. 9 : 5

Answer: Option B

Explanation:

19 . If 150 is increased by 60% and then decreased by x percent the result is 192 What is X?

• A. 20
• B. 30
• C. 32
• D. 25

Answer: Option A

Explanation:

20 . In a random survey 25 out of 150 people were able to give a correct answer to the question asked. If 500 people are surveyed about how many would be expected to answer the question correctly?

• A. 4
• B. 20
• C. 83
• D. 325

Answer: Option C

Explanation:

21 . A motorist travels to a place 150 km away at an average speed of 50 km and returns at 30 km per hour. What is his average speed for the whole journey in km per hour?

• A. 35
• B. 37
• C. 37.5
• D. 40

Answer: Option C

Explanation:

22 . A firm pays fixed coats of Tk. 1500 plus another Tk. 60 for each unit produced. How much can it produce for a budget of Tk. 4800?

• A. 42
• B. 55 units
• C. 67
• D. 71

Answer: Option B

Explanation:

23 . If the sum of 3 consecutive integers is 150, then the sum of the two smaller integers is:

• A. 99
• B. 139
• C. 110
• D. none of these

Answer: Option A

Explanation:

24 . A coat was sold for Tk.75. The coat was sold for 150% of the cost of the coat. How much did the coat cost?

• A. Tk.150
• B. Tk.45
• C. Tk.50
• D. Tk.60

Answer: Option C

Explanation:

25 . Arif incurred a loss of 25% by selling a used mobile phone set at taka 1500. How much could he gain/loss by selling that at 2200 taka?

• A. 10% loss
• B. 20% gain
• C. 10% gain
• D. 20% loss

Answer: Option C

Explanation:

26 . In an election between two contestants candidates the candidate who gets 30% of the votes polled is defeated by 15000 votes. The number of votes polled by the winning candidate is--

• A. 26250
• B. 37500
• C. 11200
• D. 15000

Answer: Option A

Explanation:

27 . In mathematics examination, a student scored 30% marks in the first paper out of a total 180. How much should he score in second paper out of a total of 150 if he is to get an overall average of at least 50%--

• A. 70
• B. 80
• C. 74
• D. 76

Answer: Option C

Explanation:

28 . What is 30% of 11/45 of 150?

• A. 11
• B. 12
• C. 13
• D. None of these

Answer: Option A

Explanation:

29 . If a car can drive 25 km on two litters of octen, how many litters will be needed for a trip of 150 km?

• A. 12
• B. 3
• C. 6
• D. 7

Answer: Option A

Explanation:

30 . In making a ratio set the costs of labor and material are in the ratio 3 : 2. A manufacturer sells a set of Tk.150 to make a gain of 25% on the cost. What is the cost of the meterial for the set?

• A. Tk.54
• B. Tk.48
• C. Tk.40
• D. Tk.72

Answer: Option B

Explanation:

31 . Company A owns 40% of the stock in the XYZ Corporation. Company B owns 15000 shares. Company C owns rest of the shares. If company C owns 25% more share than company A, how many shares does company A own?

• A. 60000
• B. 75000
• C. 90000
• D. 45000

Answer: Option A

Explanation:

32 . A room has a floor area of 150 sq. feet. If the length & breadth of the room are in the ratio 3 : 2, then what is the length of the floor in feet?

• A. 20
• B. 9
• C. 10
• D. 15

Answer: Option D

Explanation:

33 . In a school the ratio of boys to girls is 3 : 7. If there are 150 boys and girls in the school, how many boys are there?

• A. 45
• B. 75
• C. 90
• D. 105

Answer: Option A

Explanation:

34 . Let A, B and C shares profit at the ratio of 2 : 3 : 7 and A and B together get Tk.1500 less than C gets. How much A will get:

• A. 2000
• B. 1200
• C. 1500
• D. 750

Answer: Option C

Explanation:

35 . Saif, Noman and Morshed divided a sum of money among thenselves in the ratio 2 : 3 : 7. Find the share of Saif if the total share of Saif and Noman together is Tk.1500 less than that of Morshed.

• A. Tk.2000
• B. Tk.1200
• C. Tk.1500
• D. Tk.2500

Answer: Option C

Explanation:

36 . The Great Wall of China is the largest defense fortification and the greatest building enterprise ever undertaken by man. About 1500 miles long, this unique wall stretches from the Gulf of Chili of the Yellow 9০৪ along the northern frontier of China to Kans Province in the west. The width of this wall varies from 15 to 40 feet at the base, and from 12 to 35 feet at the summit. Its height ranges from 20 to 50 feet. This is the only structure on the earth that can be identified from the moon. Walled frontier between the kingdoms in China date from at least the 4th century BC. in the 3rd century BC, the first emperor of 'Ch 'in', after uniting China, linked up the existing walls and built new sections to create the Great Wall as a continuous unit. His purpose was to defend China from the Huns on the north. Watch towers and garrison stations were set at regular intervals in order to Send signals and guard the bulwark. The wall was constructed in such a way that troops summoned by beacon fire could be quickly 10 transported along its top. The wall was built mostly of rubble, although the western sections are of tamped earth and important passes are of brick or masonry. The wall was frequently modified in later centuries. Some of its sections were built in the 15th and 16th centuries with new facilities of high towers. Before that, extensive repairs and extensions were made at various periods, notably during the Ming dynasty. 1.Which of the following is INCORRECT?

• A. The Great Wall is one of the wonders of the world
• B. The Great Wall is a work of several Chinese dynasties
• C. The astronauts can identify the Great Wall from the moon
• D. The Chinese troops used the Great Wall for bonfire

Answer: Option D

Explanation:

37 . Their car does 150 miles------hour.Choose the best option for the gap.

• A. the
• B. an
• C. a
• D. no article

Answer: Option B

Explanation:

38 . 150 individuals attended a marathon held in Sylhet. Of those only If x of the 150 individuals were from sythet and z of the individuals participated in the marathon but were not from sylhet. Which of the following represents the number of individuals who did not participated in the marathon and were not from sylhet?

• A. 150 -x+z
• B. 150 -x-y+z
• C. 150-x+z
• D. 150-x-z

Answer: Option D

Explanation:

39 . A box of weight 500 N is being pulled over the floor with a horizontal force of 150N. What is the coefficient of friction between the floor and the box?

• A. 0.1
• B. 0.2
• C. 0.3
• D. 0.4

Answer: Option C

Explanation:

40 . Arif incurred a loss of 25% by selling a used mobile phone set at taka 1500. How much could he gain/lose by selling it at 2,200 taka?

• A. 10% loss
• B. 20% gain
• C. 10% gain
• D. 20% loss
• D. None of these

Answer: Option C

Explanation:

41 . In a college Rahim scored 80 marks out of 150 in History and 95 marks out of 120 in English . If he wants to score 70% marks in 3 subjects, find the minimum marks she should score in Geography out of 100.

• A. 70
• B. 55
• C. 76
• D. None of these

Answer: Option D

Explanation:

42 . what is the N of the 150D of a yern?

• A. 1.333
• B. 35.43
• C. 37.85
• D. 36.45

Answer: Option B

Explanation:

43 . If the numerator of a fraction is increased by 150% and the denominator of a fraction increased by 200% fraction becomes 10/19. Find the fraction.

• A. 12/17
• B. 10/16
• C. 12/19
• D. 9/11

Answer: Option C

Explanation:

44 . A train 150 m long passes a pole in 15 seconds and crosses another train of the same length travelling in opposite directions in 8 seconds. The speed of the second train in (km/h) is:

• A. 60km/hr
• B. 66km/hr
• C. 72km/hr
• D. 99km/hr

Answer: Option D

Explanation:

45 . In a school, the ratio of boys to girls is 3 to 7. if there are 150 boys and girls in the school, how many boys are there?

• A. 45
• B. 75
• C. 90
• D. 105
• D. 129

Answer: Option A

Explanation:

46 . The difference between √150 and √54 is _____

• A. 2√6
• B. 16√16
• C. 9√6
• D. None of these

Answer: Option A

Explanation:

47 . The ratio of boys and girls in a school is to 7. If there are 150 boys and girls, how many boys are there?

• A. 75
• B. 45
• C. 25
• D. 95

Answer: Option B

Explanation:

48 . A coat was sold for TK. 75. The coat was sold for 150% of the cost of the coat. How much did the coat cost ?

• A. TK. 150
• B. TK. 45
• C. TK. 50
• D. TK. 60
• D. None of these

Answer: Option C

Explanation:

49 . A manufacturer sells three products i.e A, B C. Product A costs 200 and sells for 250, product 150 and sells for 180, Product C cost 100 and sells for 110. On which product, he has maximum percentage of profit?

• A. B only
• B. A and B both
• C. A only
• D. C only

Answer: Option C

Explanation:

50 . A sales representative will receive a 15% commission on a sale of Tk. 28,000. If she has already received Tk. 1500 as an advance of that commission, how much more is due on the commission?

• A. Tk. 1200
• B. Tk. 2700
• C. Tk. 3200
• D. Tk. 4200

Answer: Option B

Explanation:

51 . Select the one word or phrase that best completes the sentence. Prices for motor cycles can run --------Tk. 150,000.

• A. as high as
• B. as high lo
• C. so high to
• D. so high as

Answer: Option A

Explanation:

52 . A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory. There are 100 seniors, 150 juniors, and 200 sophomores who applied. Each senior's name is placed in the lottery 3 times, each junior's name, 2 times, and each sophomore's, 1 time. What is the probability that a senior's name will be chosen?

• A. 1/8
• B. 2/9
• C. 2/7
• D. 3/8
• D. None of these

Answer: Option D

Explanation:

53 . Taxi fare is charged at Tk 15 per mile plus Tk 150 for a trip. If the total fare by taxi is Tk 600, then what is the distance covered in miles by the trip?

• A. 30
• B. 32
• C. 20
• D. 25
• D. None of them

Answer: Option A

Explanation:

54 . If 150 is increased by 60% and then decreased by x percent the result is 192. What is x ?

• A. 20
• B. 30
• C. 32
• D. 25
• D. None

Answer: Option A

Explanation:

55 . A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr?

• A. 13.33
• B. 26.67
• C. 40
• D. 66.67

Answer: Option C

Explanation:

56 . A box contains 90 nuts each of 100 gms an d 100 bolts each of 150 gms. If the entire box weighs 35.5 kgs , then the wight of the empty box is--

• A. 10 kg
• B. 10.5 kg
• C. 11 kg
• D. 11.5 kg
• D. None of these

Answer: Option D

Explanation:

57 . A car is driven at the speed of 100 km/hr and stops for 10 minutes at the end of every 150 km. To cover a distance of 1000 km, it will take.

• A. 11 hours
• B. 9 hours
• C. 10 hours
• D. 12 hours

Answer: Option A

Explanation:

58 . A trader buys some goods for Tk. 150. If the overhead expenses be 12% of cost price, then at what price should it be sold to earn 10%?

• A. Tk. 188.80
• B. Tk. 185.80
• C. Tk. 187.80
• D. Tk. 184.80

Answer: Option D

Explanation:

59 . In a kilometre race, A beats B by 100 m and B beats C by 150 m. In the same race, by how many metres does A beat C?

• A. 235 m
• B. 225 m
• C. 240 m
• D. 250 m

Answer: Option D

Explanation:

60 . The student of a school were asked to name their favorite type of pet, Of the 430 student surveyed, 258 said that their favorite type of pet was a dog, Suppose that only 150 students were surveyed, with similar results, about how many students would say that a dog is their type of pet?

• A. 58
• B. 90
• C. 98
• D. 146

Answer: Option B

Explanation:

61 . If the total sales for a business in a certain year were TK.150,000, what were the sales in June, If June sales were half the monthly average?

• A. TK.6,250
• B. TK.12,500
• C. TK.15,000
• D. TK.25,000
• D. TK.48,000

Answer: Option A

Explanation:

62 . Rahim's salary is 150% of Karim's salary. Karim's salary is 80% of Shahin's salary. What is the ratio of Shahin's salary to Rahim's salary?

• A. 2 to 3
• B. 5 to 6
• C. 5 to 4
• D. 6 to 5
• D. None of these

Answer: Option B

Explanation:

63 . A man invests Tk.900000 in a share earning Tk.9 as divided per share, when a share of face value of Tk.100 is selling for Tk.150. What is his annual income?

• A. Tk.54000
• B. Tk.81000
• C. Tk.15000
• D. Tk.58000

Answer: Option B

Explanation:

64 .  FAB-1500 নামক বোমা কোন দেশের তৈরি?

• A. ইউক্রেন
• B. যুক্তরাষ্ট্র
• C. রাশিয়া
• D. উত্তর কোরিয়া

Answer: Option C

Explanation:

65 . In how many years, Tk. 150 will produce the same interest @8% Tk.800 produce in years @4.5%

• A. 6
• B. 8
• C. 9
• D. 12

Answer: Option C

Explanation:

66 . যদি A = {x : x হলো 5, 7 দ্বারা বিভাজ্য এবং x < 150} হয় তবে P(A) এর সদস্য সংখ্যা কত?

• A. ৪
• B. 12
• C. 14
• D. 16

Answer: Option D

Explanation:

67 . In a camp, there is a meal for 120 men or 200 children. If 150 children have taken the meal, how many men will be catered to with the remaining meal?

• A. 20
• B. 30
• C. 40
• D. 50

Answer: Option B

Explanation:

68 . ∠B=75

• A. $30°$
• B. $45°$
• C. $75°$
• D. $105°$

Answer: Option C

Explanation:

69 . What is the height of a right cylinder with radius 5 in and volume  150 π   in 3  ?

• A. 5 in
• B. 6 in
• C. 7 in
• D. 8 in

Answer: Option B

Explanation:

70 . A box contains 90 nuts each of 100 gm and 100 bolts each of 150 gm. If the entire box weighs 35.5 kg, then find the weight of the empty box

• A. 10.5kg
• B. 11kg
• C. 11.5kg
• D. 24 kg

Answer: Option C

Explanation:

71 . Suppose that each widget sells for Tk. 150. What is the profit earned by AC Ltd. in July ? ( Profit is defined as the excess of sales revenue over total cost.)

• A. 1,600
• B. 2,400
• C. 0
• D. 400

Answer: Option C

Explanation:

72 . √ 150 + √ 150 = ?

• A. 45
• B. 20
• C. 25
• D. 600
• D. 300

Answer: Option C

Explanation:

73 . Mr. A has won an election by a vote of 250 to 150 . What part of the total vote was against him ?

• A. 2/5
• B. 3/5
• C. 4/7
• D. 7/15
• D. 3/8

Answer: Option E

Explanation:

74 . 150

• A. $2\sqrt{6}$
• B. $16\sqrt{16}$
• C. $9\sqrt{6}$
• D. None of these

Answer: Option A

Explanation:

75 . একটি সিলিকন ট্রানজিস্টরের ইনপুট রোধ 150 Ω। পীঠ প্রবাহ 50 µA পরিবর্তনের জন্য কালেক্টর প্রবাহের পরিবর্তন হয় 2.5 mA। ট্রানজিস্টরটি সাধারণ এমিটার অ্যামপ্লিফায়ার হিসেবে ব্যবহার করা হয়েছে যার ভার রোধ 5 k2। অ্যামপ্লিফায়ারের ভোল্টেজ লাভ কত?

• A. 1500
• B. 1650
• C. 1666.67
• D. 1677.67

Answer: Option C

Explanation:

76 . একটি রেফ্রিজারেটরের কর্মসম্পাদন সহগ ২। এটি শীতল তাপাধার হতে প্রতি চক্রে 300J তাপ গ্রহণ করলে সম্পাদিত কাজের পরিমান কত?150]

• A. 150 J
• B. 600 J
• C. 302J
• D. 298J

Answer: Option A

Explanation:

77 . How much was the original cost of a radio which was sold for Tk. 2,300? (1) The radio was sold for a discount of 10% from its original cost (2) The sales tax was Tk 150

• A. Statement (1) ALONE is sufficient but statement (2) alone is not sufficient
• B. Statement (2) ALONE is sufficient but statement (1) alone is not sufficient
• C. Both statements TOGETHER are sufficient but NEITHER statement alone is sufficient
• D. EACH statement ALONE is sufficient

Answer: Option C

Explanation:

78 . 1500 kg ভরের একটি গাড়ি টো ট্রাকের সাহায্যে টানলে গাড়িটির উপর মোট 1000 N বল ক্রিয়া করে। গাড়িটির ত্বরণ কত?

• A. 0.87 N/kg
• B. 0.76 N/kg
• C. 0.67 N/kg
• D. 0.96 N/kg

Answer: Option C

Explanation:

79 .

• A. 1500
• B. 1650
• C. 1666.67
• D. 1677.67

Answer: Option C

Explanation:

80 . দুইটি গাড়ীর মধ্যবর্তী দূরত্ব 150 km এবং একটি অপরটির দিকে যথাক্রমে 60 km / h এবং 40 km / h বেগে চলছে। তারা কত ঘণ্টা পর মিলিত হবে?

• A. 2.5 h
• B. 2.0 h
• C. 1.75 h
• D. 1.5 h

Answer: Option D

Explanation:

81 . একটি আরোহী ট্রান্সফর্মার এর 150 V হতে 3000Ω পাওয়া যায়। যদি গৌণ কুন্ডলীর পাক সংখ্যা 2000 হয় তবে মূখ্য কুন্ডলীর পাক সংখ্যা কত ?

• A. 100
• B. 2000
• C. 1000
• D.

Answer: Option A

Explanation:

82 . একটি নির্দিষ্ট পণ্যের মূল্য দুইবার কমানো হয়েছে। প্রথমবার 20% এবং দ্বিতীয়বার 25%। যদি প্রকৃত মূল্য 150 টাকা হয়ে থাকে তা।লেখা দুইবার মূল্য কমানোর পর চূড়ান্ত মূল্য কত?

• A. 60
• B. 80
• C. 85
• D. 90

Answer: Option D

Explanation:

83 . 100 kg ভরের একটি পাথর 150 m উঁচু কোন স্থান হতে ছেরে দেয়া হলো। 5 s পরে ভূমি থেকে পাথরটির উচ্চতা কত হবে?

• A. none
• B. 22.5 m
• C. 122.5 m
• D. 27.5m

Answer: Option D

Explanation:

84 .  1N 100 mL NaOH এর সঙ্গে 2N 150 mL NaOH মিশ্রিত করলে মিশ্রিত NaOH এর শক্তি কত হবে ?

• A. 1.2 N
• B. 1.4 N
• C. 1.5 N
• D. 1.6 N
• D. 1.8 N

Answer: Option D

Explanation:

85 . কোন সিস্টেম 1500J তাপ শোষণ করে এবং 82J কাজ সম্পাদন করে। সিস্টেমের অন্তঃস্থ শক্তির পরিবর্তন হবে -

• A. 1418J
• B. 1232 J
• C. 1582 J
• D. 1237 J

Answer: Option A

Explanation:

86 . 200 মাইল / ঘন্টা বেগে x ঢাকা থেকে চট্রগ্রামের দিকে এবং y একই সময়ে 150 মাইল / ঘন্টা বেগে চট্রগ্রাম থেকে ঢাকার দিকে রওনা হলো । উভয়ে যখন মিলিত হয় তখন x ও y এর মধ্যে কে ঢাকার নিকটবর্তী হবে ?

• A. x
• B. y
• C. উভয়ই
• D. কোনোটিই নয়

Answer: Option C

Explanation:

87 . একটি খালি লঞ্চের পানির উপরিভাগের অংশের গড় প্রস্থছেদ 150 m2  । যদি প্রতিজন মালসহ 75 kg হারে 200 জন যাত্রী নেওয়া হয় তাহলে লঞ্চের কতটুকু ডুববে ?

• A. 1m
• B. 0.1 m
• C. 15 cm
• D. 0.75 m

Answer: Option B

Explanation:

88 .  কোন বস্তুর তাপ ধারণ ক্ষমতা 150 J/ ° C  হলে এর তাপমাত্রা  80.0 ° C হতে 20.0 ° C  এ নামিয়ে আনতে কী পরিমাণ তাপশক্তি বের করতে হবে?

• A. 1200 J
• B. 3000 J
• C. 9000 J
• D. 15000 J

Answer: Option C

Explanation:

89 . 20 m/s বেগে চলমান 1000 kg ভরের একটি ট্রাক 1500 kg ভরের একটি স্থির ট্রাককে ধাক্বা দিয়ে এক সাথে যুক্ত হয়ে যে বেগে চলতে থাকবে ।

• A. 12 . m/s
• B. 10 m/s
• C. 8 m/s
• D. 7.5 m/s

Answer: Option C

Explanation: