The ratio of wavelengths of proton and deuteron accelerated by potential $\mathrm{V_p}$ and $\mathrm{V_d}$ is $1:\sqrt{2}$. Then, the ratio of $\mathrm{V_p}$ to $\mathrm{V_d}$ will be :

JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 25 July 2022, Shift 2, Physics Q37

Question 37 of 90 in this shift, Physics question 7 of 30, Section A.

The ratio of wavelengths of proton and deuteron accelerated by potential

\mathrm{V_p}

and

\mathrm{V_d}

1:\sqrt{2}

. Then, the ratio of

\mathrm{V_p}

\mathrm{V_d}

will be :

(1)1:1
(2) $\sqrt{2}:1$
(3)2 : 1
(4)4 : 1Official answer

Official answer

Option 4

NTA final key.

Chapter: Dual Nature of Radiation and Matter
Topic: Matter Waves
Idea tested: Wavelength Ratios of Different Particles

Same idea in other shifts

Asked 15× in all

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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 108 of the 174 JEE Main shifts held from 2017 to 2026.