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Time dependence of a physical quantity P...

Time dependence of a physical quantity P is given by `P =P_0 exp(-alpha t^2),` where `alpha` is a constant and t is time. The constant `alpha` is

A

dimensionless

B

has dimensions `T^(-2)`

C

has dimensions of P.

D

has dimensions `T^2`

Text Solution

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The correct Answer is:
B
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