Question

The 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`
A. is dimensionless
B. has dimensions `[T^(-2)]`
C. has dimensions `[T^(2)]`
D. has dimensions of P

Answer 1

Correct Answer - b
`[alphat^(2)]=` dimensionless
`[alpha]=[T^(-2)]`