An electron with mass 'm' with an initial velocity (t=0) v = v₀i (v₀>0) enters a magnetic field B = B₀j. If the initial de-Broglie wavelength at t=0 is λ₀ then its value after time 't' would be:

(A) λ₀√(1+(e²B₀²t²)/(m²))

(C) (λ₀)/(√(1+(e²B₀²t²)/(m²)))

(D) (λ₀)/(√(1-(e²B₀²t²)/(m²)))

Dual Nature of Matter and Radiation: JEE Main 2025 Physics question

JEE Main 2025 · 2 Apr, Evening shift · Q30

JEE Main 20252 Apr, Evening shiftPhysicsMediumDual Nature of Matter and Radiation146× since 2002

An electron with mass 'm' with an initial velocity

(t=0)

\vec{v} = v_0\hat{i}\ (v_0>0)

enters a magnetic field

\vec{B} = B_0\hat{j}

. If the initial de-Broglie wavelength at

t=0

\lambda_0

then its value after time 't' would be :

JEE Main 2025 Dual Nature of Matter and Radiation Question with Solution (2 Apr Evening shift, Q30) | JEE Arc