An electron with mass ' m ' with an initial velocity ( t = 0 ) v = v 0 i ^ ( v 0 > 0 ) enters a magnetic field B = B 0 j ^ . If the initial de-Broglie wavelength at t = 0 is λ 0 then its value after time ' t ' would be :

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PhysicsModern PhysicsDe Broglie & Matter WavesMedium2 minPYQ_2025

PhysicsMediumstatement

An electron with mass ' $m$ ' with an initial velocity $(t = 0) v = v_{0} \hat{i} (v_{0} > 0)$ enters a magnetic field $B = B_{0} \hat{j}$ . If the initial de-Broglie wavelength at $t = 0$ is $λ_{0}$ then its value after time ' t ' would be :

Options:

Answer:

Solution:

Magnetic field does not work
$∴$ Speed will not charge, so De-Broglie wavelength remains same.

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:De Broglie & Matter Waves

⏱ 2mℹ️ Source: PYQ_2025

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