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

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IMPORTANT

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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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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 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

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 31

The wavelength associated with and electron accelerated through a potential difference of

100 V

is of the order of

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

The work function of a photometal is

6.63 eV

. The threshoid wavelength is

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Alpha Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise-1>Q 33

The speed of an electron having a wavelength of

10^{- 10} m

is :-