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De Broglie Relationship - Practice Questions & MCQ

Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

Quick Facts

  • Debroglie wavelength is considered one the most difficult concept.

  • 12 Questions around this concept.

Solve by difficulty

The de-Broglie wavelength of a particle of mass 6.63 g moving with a velocity of 100 ms-1 is: 

 

Calculate the wavelength (in nanometre) associated with a proton moving at 1.0 x 103 ms-1 (Mass of proton = 1.67 × 10-27 kg and h = 6.63 × 10-34 Js)

The de Broglie wavelength of a tennis ball of mass 60g moving with a velocity of 10  metres per second is approximately

\left ( Planck'\! s \: constant, h= 6.63 \times 10^{-34}Js\right )

Concepts Covered - 1

Debroglie wavelength

De-broglie wavelength

\lambda = \frac{h}{mv}= \frac{h}{p}

where m is the mass of the particle

v its velocity 

p its momentum

Bohr model and de-broglie principle :

Bohr model,  mvr=\frac{nh}{2\pi}

Debroglie, p=\frac{h}{\lambda }

Combining the two

2\pi r=n\lambda

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Debroglie wavelength

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Debroglie wavelength

Chemistry Part I Textbook for Class XI

Page No. : 49

Line : 25

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