1.

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

Answer»

<P>dimensionless
has dimensions `T^(–2)`
has dimensions of P
has dimensions `T^(2)`

SOLUTION :`alphat^(2)` = constant `ALPHA=(1)/(t^(2))=[T^(-2)]`


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