Question

The dimensional formula of plank's constant is identical to that of

• A. torque
• B. work
• C. stress
• D. angular momentum

Answer 1

The correct option is D angular momentum

Energy of photon $E=h\nu$
Dimensions of $h$ is equivalent to dimension of $\frac{E}{\nu }=\text{[M L}{}^2\text{T}{}^{-1}\text{]}$

Angular momentum $=mvr$
Its dimensions are $\text{[M L}{}^2\text{T}{}^{-1}\text{]}$