An electron (mass m ) with an initial velocity \overrightarrow{ v }= v _0 \hat{ i } ( v _0>0) is moving in an electric field \overrightarrow{ E }=- E _0 \hat{ i } ( E _0>0) where E _0 is constant. If at t =0 de Broglie wavelength is \lambda_0=\frac{ h }{ mv _0}, then its de Broglie wavelength after time t is given by

Correct Answer is : λ0(1+eE0tmv0)

\lambda_0 (1+\frac{ eE _0 t }{ mv _0})

{\lambda_0}/{ (1+\frac{ eE _0 t }{ mv _0}) }

JEE Main 2026 Model Paper 1

Question : 12 of 75

Marks: +1, -0

An electron (mass m ) with an initial velocity

→

=v0

∧

(v0>0) is moving in an electric field

→

=−E0

∧

(E0>0) where E0 is constant. If at t=0 de Broglie wavelength is λ0=‌

mv0

, then its de Broglie wavelength after time t is given by

Go to Question:

Prev Question

Next Question