Units And Dimensions Question 2

Question 2 - 2024 (27 Jan Shift 1)

Given below are two statements :

Statement (I) : Planck’s constant and angular momentum have same dimensions.

Statement (II) : Linear momentum and moment of force have same dimensions.

In the light of the above statements, choose the correct answer from the options given below :

(1) Statement I is true but Statement II is false

(2) Both Statement I and Statement II are false

(3) Both Statement I and Statement II are true

(4) Statement I is false but Statement II is true

Show Answer

Answer: (1)

Solution:

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

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

$[P]=MLT^{-1}$

$[\tau]=ML^{2} T^{-2}$

(Here $h$ is Planck’s constant, $L$ is angular momentum, $P$ is linear momentum and $\tau$ is moment of force)