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NEET 2002 (AIPMT) · Matter Waves: de Broglie Wavelength

Matter Waves: de Broglie Wavelength question from NEET 2002 (AIPMT)

Q147NEET 2002 · AIPMTEasy

Matter Waves: de Broglie Wavelength

If particles are moving with same velocity, then which has maximum de Broglie wavelength?

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Answer: (d)

$\lambda = \dfrac{h}{mv}$ ; for the same $v$ , $\lambda \propto \dfrac{1}{m}$ .
The $\beta$ -particle (electron) has the smallest mass, so the largest $\lambda$ .
So the answer is (d) $\beta$ -particle.

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