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The graph which shows the variation of the de Broglie wavelength $(λ)$ of a particle and its associated momentum $(p)$ is :

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Important Questions on Dual Nature of Matter and Radiation

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Dual Nature of Matter and Radiation>AIPMT - 3rd May 2015>Q 3

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

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Dual Nature of Matter and Radiation>AIPMT - 25th July 2015>Q 4

A photoelectric surface is illuminated successively by monochromatic light of wavelength

λ

and

\frac{λ}{2}

. If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the surface of the material is:
(

h

= Planck's constant,

c

= speed of light)

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Dual Nature of Matter and Radiation>NEET - 12 September 2021>Q 6

The number of photons per second on an average emitted by the source of monochromatic light of wavelength

600 nm

, when it delivers the power of

3.3 \times 10^{- 3} W

will be

: (h = 6.6 \times 10^{- 34} J s)

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Dual Nature of Matter and Radiation>NEET Phase 2 (14 October 2020)>Q 7

The de-Broglie wavelength of an electron moving with kinetic energy of

144 eV

is nearly

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Dual Nature of Matter and Radiation>NEET - 13th September 2020>Q 8

An electron is accelerated from rest through a potential difference of

V

volt. If the de Broglie wavelength of the electron is

1.227 \times 10^{- 2} nm

, the potential difference is:

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Dual Nature of Matter and Radiation>NEET - 13th September 2020>Q 9

Light of frequency

1.5

times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if the frequency is halved and intensity is doubled?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Dual Nature of Matter and Radiation>NEET - 6th May 2018>Q 11

An electron of mass

m

with an initial velocity

\vec{V} = V_{0} \hat{i} (V_{0} > 0)

enters in an electric field

\vec{E} = {-E}_{0} \hat{i} (E_{0} > 0

and is a constant

)

t = 0

. If

λ_{0}

is its de-Broglie wavelength initially, then its de-Broglie wavelength at time

t

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Dual Nature of Matter and Radiation>NEET - 24th July 2016>Q 15

Photons with energy of

5 eV

are incident on a cathode,

C

in a photoelectric cell. The maximum energy of emitted photoelectrons is

2 eV.

When photons of energy

6 eV

are incident on

C

, no photoelectrons will reach the anode,

A

, if, the stopping potential of

A

relative to

C

The graph which shows the variation of the de Broglie wavelength λ of a particle and its associated momentum p is :

Important Questions on Dual Nature of Matter and Radiation

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The graph which shows the variation of the de Broglie wavelength $(λ)$ of a particle and its associated momentum $(p)$ is :