Which of the following is dimensional formula of intensity of radiation ?

Options

A. `M^(1)L^(2)T^(-2)`
B. `M^(1)L^(0)T^(3)`
C. `M^(1)L^(0)T^(-3)`
D. `M^(0)L^(2)T^(-2)`

Answer

C

Explanation

From `I=(E )/(At), (M^(1)L^(2)T^(-2))/(L^(2)T^(1))=M^(1)L^(0)T^(-3)`