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JEE Main 2023 (8 Apr, Shift 1) · Matter Waves: de Broglie Wavelength

Matter Waves: de Broglie Wavelength question from JEE Main 2023 (8 Apr, Shift 1)

Q68JEE Main 2023 · 8 APR · SHIFT 1Easy

Matter Waves: de Broglie Wavelength

Proton $(\mathrm{P})$ and electron (e) will have same de-Broglie wavelength when the ratio of their momentum is (assume, $\mathrm{m_p} = 1849\, \mathrm{m_e}$ ):

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Answer: (a)

$\lambda = \dfrac{h}{p}$ depends only on momentum, not on mass.
Same $\lambda \Rightarrow p_P = p_e$ .
So the answer is (a) $1 : 1$ .

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