Dual Nature of Matter

JEE Main level, single correct, medium

13 of 200

Question 13 of 200

An electron with mass ' mm ' with an initial velocity (t=0)v→=v0i^(v0>0)(\mathrm{t}=0) \overrightarrow{\mathrm{v}}=\mathrm{v}_0 \hat{\mathrm{i}} \quad\left(\mathrm{v}_0 \gt 0\right) enters a magnetic field B⃗=B0j^\vec{B}=B_0 \hat{j}. If the initial de-Broglie wavelength at t=0\mathrm{t}=0 is λ0\lambda_0 then its value after time ' t ' would be :

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Answer: (D) λ0\lambda_0

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

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