শব্দানুভূতীর স্থায়ীত্বকাল বা শ্রুতিরেশ কত?

A $\frac{1}{10}Sec$

B $\frac{1}{20}Sec$

C $\frac{1}{30}Sec$

D $\frac{1}{40}Sec$

Solution

Correct Answer: Option A

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