JEE Main 2022 · 26 Jul · Shift 2 · Physics Q40

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PhysicsSingle correct+4 / -1Question 40 of 90

A nucleus of mass M at rest splits into two parts having masses $\dfrac{M'}3$ and $\dfrac{2M'}3$ $(M'<M)$ . The ratio of de Broglie wavelength of two parts will be :

1:2

2:1

1:1

2:3

Answer and worked solution

Official answer: C

Momentum conservation. The two parts have equal and opposite momenta, so $\lambda=\frac hp$ is the same: $1:1$ .

(C)

Topics:de Broglie waves Conservation of linear momentum

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JEE Main 2022 · 26 Jul · Shift 2, Physics question 40