Question

Dimension of Planck's constant is
(B)
ML2T-2
ML27-1
(D)
MLT-2
(C)
MLT-1​

Answer 1

Answer:

Dimensional Formula of Planck's constant = M1L2T-1. SI unit of Planck's constant is joule-seconds (j-s).

Answer 2

Answer :

$[ML^2T^{-1}]$

Planck's constant is given by the formula

$\tt Planck's\ constant = \dfrac{energy}{frequency}$

$\tt h = \dfrac{e}{ \nu}$

The dimensions of energy E is $[ML^2T^{-2}]$ and dimension of frequency is $[T^{-1}]$ .

Using them in the above formula :

$\tt h = \dfrac{[ML^2T^{-2}]}{[T^{-1}]}$

$\tt h = [ML^2T^{-1}]$

_________________________

Planck's constant gives the energy radiated by one quanta of photon to the frequency of the radiation .

Its value of 6.62 × $10^{-34}$ Js.

Its SI unit is Joule second .

It was given by Planck hence named after him .