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When ultraviolet radiation is incident o...

When ultraviolet radiation is incident on a surface, no photoelectrons are emitted. If another beam causes photoelectrons to be emitted from the surface, it may consist of
(i) radio waves
(ii) infrared rays
(iii) X-rays
(iv) gamma rays

A

(i),(ii)

B

(ii),(iii)

C

(i),(iv)

D

(iii),(iv)

Text Solution

Verified by Experts

The correct Answer is:
D
`upsilon_("gamma")gtupsilon_(X-rays)gtupsilon_("ultraviolet")`
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CP SINGH-PHOTOELECTRIC EFFECT-EXERCISES
  1. Light of frequeny 1.5 times the threshold frequency , imcident on a ph...

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  2. If the wavelength of light in an experiment on photoelectric effect is...

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  3. When ultraviolet radiation is incident on a surface, no photoelectrons...

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  4. A non-monochromatic light is used in an experiment on photoelectric ef...

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  5. When the intensity of a light source is increased

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  6. The photocurrent in an experiment on photoelectric effect increases if

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  7. A point source of light is used in a photoelectric effect. If the sour...

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  8. A phot of energy h upsilon is absorbed by a free electron of a metal h...

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  9. Photoelectric effect supports quantum nature of light because (a) th...

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  10. If the frequency of light in a photoelectric experiment is doubled the...

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  11. Two identical metal plates show photoelectric effect by a light of wav...

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  12. The cathode of a photoelectric cell is changed such that the work func...

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  13. The frequency and intensity of a light source are both doubled. Consid...

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  14. The threshold wavelength for photoelectric emission from a material ...

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  15. A photoelectric cell is illuminated by a point source of light 1 m awa...

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  16. If the distance of 100 Watt lamp is increased from a photocell, the sa...

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  17. A point source causes photoelectric effect from a small metal plate. W...

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  18. When a monochromatic point source of light is at a distance of 0.2 m...

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  19. The collector plate in an experiment on photoelectric effect is kept v...

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  20. The electric field associated with a light wave is given by E= E0 sin...

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