The intensity of a traveling wave has units of `W//m^(2)`, give the dimensional formula of intensity :

Options

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

Answer

A

Explanation

Intensity has units `W//m^(2)`
`:.` E (intensity)=`("Power")/("area")`
`E=(ML^(2)T^(-3))/(L^(2))=ML^(0)T^(-3)`
Hence choice is `(a)`.