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The time dependance of a physical quanti...

The time dependance of a physical quantity 'P' is given by `P=P_(0)exp(-at^(2))`, where a is a constant and 't' is time . The constant a is

A

dimensionless

B

has dimensions `T^(–2)`

C

has dimensions of P

D

has dimensions `T^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`alphat^(2)` = constant `alpha=(1)/(t^(2))=[T^(-2)]`
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