The time dependence of a physical quantity p is given by

Home » Mechanics » Physical World, Units and Measurements » Question

The time dependence of a physical quantity p is given by p = p₀ exp ( – α t²), where α is a constant and t is the time. The constant α

1. is dimensionless
2. has dimensions T^{– 2}
3. has dimensions T²
4. has dimensions of p

Correct Option: B

In p = p₀ exp ( – αt²), αt² dimensionless

∴ α -	I	-	I	- [T^-2]
	t²		T²