/

Learn

Friday, 9 October

/

JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 9 April 2024, Shift 2, Physics Q31

Question 31 of 90 in this shift, Physics question 1 of 30, Section A.

The de-Broglie wavelength associated with a particle of mass

m

and energy

E

is

h/\sqrt{2mE}

. The dimensional formula for Planck's constant is :

(1) $[\mathrm{M^2L^2T^{-2}}]$
(2) $[\mathrm{ML^2T^{-1}}]$ Official answer
(3) $[\mathrm{ML^{-1}T^{-2}}]$
(4) $[\mathrm{MLT^{-2}}]$

Official answer

Option 2

NTA final key.

Chapter: Units and Measurements
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.