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1. নিচের কোনটির মাত্রা নেই? (Which of the following is a dimensionless quantity?

  • A. পীড়ন (Stress)
  • B. পীড়ন (Stress)
  • C. পীড়ন (Stress)
  • D. পীড়ন (Stress)

Answer: Option C

Explanation:

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