Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 22

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When intensity of incident light increases

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Important Questions on Dual Nature of Matter and Radiation

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 23

If wavelength of a photon is

6000 Å,

then its energy will be

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 24

Work function a metal is

5.26 \times 10^{- 18} J

then, its threshold wavelength will be :

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 25

A radio station is transmitting the waves of wavelength $300 m .$ Radiation capacity of the transmitter is $10 kW .$ Find out the number of photons which are emitting in per unit time.

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 26

The de Broglie wavelength of a particle accelerated with $150 V$ potential is $10^{- 10} m$ . If it is accelerated by $600 V$ , then its wavelength will be:

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 27

The momentum of Photon having energy

E

is

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 28

The accelerating voltage of an electron gun is

50, 000

volt. de Broglie's wavelength of the electron will be

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 29

Photo-cell is illuminated by a source of light, which is placed at a distance

d

from the cell, If the distance become

\frac{d}{2}

then number of electrons emitted per second will be :-

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 30

Relation between wavelength of photon and electron of same energy is