The de-Broglie wavelengths proton |MODERNPHYSICSJEEMAIN2023

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JEE MAIN 2023

11-4-2023

Question

The ratio of the de-Broglie wavelengths of proton and electron having same kinetic energy: (Assume mp = me × 1849)

Select the correct option:

1 : 43

1 : 30

1 : 62

2 : 43

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$\lambda \propto \frac{1}{\sqrt{\mathrm{~m}}} \Rightarrow \frac{\lambda_{\mathrm{p}}}{\lambda_{\mathrm{e}}}=\sqrt{\frac{\mathrm{m}_{\mathrm{e}}}{\mathrm{m}_{\mathrm{p}}}}=1: 43$

Question Tags

JEE Main

Chemistry

Easy

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