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NEET 2015 (AIPMT, Cancelled Paper) · Matter Waves: de Broglie Wavelength

Matter Waves: de Broglie Wavelength question from NEET 2015 (AIPMT, Cancelled Paper)

Q134NEET 2015 · AIPMT · CANCELLED PAPEREasy

Matter Waves: de Broglie Wavelength

Which of the following figures represent the variation of particle momentum and the associated de- Broglie wavelength?

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Answer: (d)

$p = \dfrac{h}{\lambda}$ , so $p\lambda =$ constant.
The $p$ vs $\lambda$ graph is a rectangular hyperbola (p falls as $\lambda$ rises, never touching the axes).
So the answer is (d).

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