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The maximum velocity of an electron emit...

The maximum velocity of an electron emitted by light of wavelength `lambda` incident on the surface of a metal of work function `phi`, is
Where h = Planck's constant , m = mass of electron and c = speed of light.

A

`[(2(hc+lambdaphi))/(mlambda)]^(1//2)`

B

`(2(hc-lambdaphi))/m`

C

`[(2(hc-lambdaphi))/(mlambda)]^(1//2)`

D

`[(2(hc-phi))/m]^(1//2)`

Text Solution

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The correct Answer is:
c
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PRADEEP-DUAL NATURE OF RADIATION AND MATTER-Exercise
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  11. The minimum energy required by an electron to..........form the metal ...

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  12. The maximum kinetic energy of emitted photoelectrons depends on the......

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  13. The ratio of number of photoelectrons ejected to the number of the pho...

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  14. For given photosenstive material, the photoelectric current is...........

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  15. An increase in the frequency of the incident light.............the vel...

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  16. The minimum energy required to ejected an electron from the surface of...

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  17. In photoelectric effect the energy of the free electron does not depen...

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  18. Photon is not a..........but it is a.......... .

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  19. The velocity of photons different media is............. .

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  20. The intensity of light depends upon the.........present in light.

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