• A. $400Vc{m}^{-1}$
• B. $400V{m}^{-1}$
• C. $40Vc{m}^{-1}$
• D. $40V{m}^{-1}$

Answer: Option B

Explanation:

• A. $\frac{d^2}{6h}+\frac{h}{2}$
• B. $\frac{d}{6h}+\frac{h}{2}$
• C. $\frac{d^3}{6h}+\frac{h}{2}$
• D. $\frac{d^2}{6h}+\frac{h^2}{2}$

Answer: Option A

Explanation:

• A. ${}_1{}^{2}H$
• B. ${}_1{}^{3}H$
• C. ${}_2{}^{4}H$
• D. ${}_1{}^{1}H$

Answer: Option D

Explanation:

• A. ${10}^{-2}$
• B. 100J
• C. 50J
• D. 0.5J

Answer: Option A

Explanation:

• A. $\frac{10}{7}m/s$
• B. $\frac{7}{10}m/s$
• C. $\frac{10}{3}m/s$
• D. $\frac{3}{10}m/s$

Answer: Option C

Explanation:

• A. $1.41{\mathrm{m}}_{\mathrm{o}}{\mathrm{C}}^2$
• B. $173{\mathrm{m}}_{\mathrm{o}}{\mathrm{C}}^2$
• C. $0.25{\mathrm{m}}_{\mathrm{o}}{\mathrm{C}}^2$
• D. $0.41{\mathrm{m}}_{\mathrm{o}}{\mathrm{C}}^2$

Answer: Option D

Explanation:

• A. $\eta =1-\frac{Q_2}{Q_1}$
• B. $\eta =1+\frac{Q_2}{Q_1}$
• C. $\eta =1-\frac{Q_1}{Q_2}$
• D. $\eta =1+\frac{Q_1}{Q_2}$

Answer: Option A

Explanation:

• A. $\left[L{T}^{-1}\right]$
• B. $\left[T^{-1}\right]$
• C. $\left[LT\right]$
• D. $\left[L^{-1}{T}^{-1}\right]$

Answer: Option A

Explanation:

• A. $\frac{1}{4}$
• B. $\frac{1}{2}$
• C. $2$
• D. $4$

Answer: Option D

Explanation:

• A. $\lambda$
• B. $\frac{\lambda }{2}$
• C. $\frac{\lambda }{4}$
• D. $0$

Answer: Option B

Explanation:

• A. $\frac{\lambda }{2}$
• B. $n\lambda$
• C. $\left(2n+1\right)\frac{\lambda }{2}$
• D. $\left(2n-1\right)\frac{\lambda }{2}$

Answer: Option B

Explanation:

• A. $\oint B.\stackrel{\rightharpoonup }{di}={\mu }_{o}i$
• B. $\stackrel{\rightharpoonup }{\nabla }.\stackrel{\rightharpoonup }{B}=0$
• C. $\overrightarrow{B}=\mu \overrightarrow{H}$
• D. $\overrightarrow{\nabla }\times \overrightarrow{E}=\frac{\partial \overrightarrow{B}}{\partial t}$

Answer: Option A

Explanation:

• A. $pH=-\log \left[H^{+}\right]$
• B. $pH=-\log \left[H\right]$
• C. $pH=-\log \left[H^{++}\right]$
• D. $pH=\log \left[H^{+}\right]$

Answer: Option A

Explanation:

• A. 0.3 cm
• B. $3/\sqrt{10}$ cm
• C. 3 cm
• D. 0.9 cm

Answer: Option B

Explanation:

• A. $n_i=80,n_f=2$
• B. $n_i=1,n_f=2$
• C. $n_i=3,n_f=90$
• D. $n_i=2,n_f=1$

Answer: Option D

Explanation: