Physics · 2026
JEE Main · 28 January 2026, Shift 1 · Q48
The ratio of de Broglie wavelength of a deutron with kinetic energy E to that of an alpha particle with kinetic energy 2 E, is n: 1. The value of n…
The ratio of de Broglie wavelength of a deutron with kinetic energy $\displaystyle E$ to that of an alpha particle with kinetic energy $\displaystyle 2 E$, is $\displaystyle n: 1$. The value of $\displaystyle n$ is $\displaystyle \_\_\_\_$.
(Assume mass of proton = mass of neutron) :
Official answer
From NTA’s final answer key for this paper.
2
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.