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A photocell employs photoelectric effect...

A photocell employs photoelectric effect to convert

A

Change in the frequency of light into a change in the electric current.

B

Change in the frequency of light into a change in electric voltage

C

Change in the intensity of illumination into a change in photoelectric current

D

Change in the intensity of illumination into a change in the work function of the photo cathode

Text Solution

Verified by Experts

The correct Answer is:
C
It indicates that threshold frequency is greater than that of ultraviolet light. As x-rays have greater frequency than uv rays, so they can cause photoelectric effect.
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FULL MARKS-DUAL NATURE OF RADIATION AND MATTER-ADDITIONAL QUESTIONS -(MULTIPLE CHOICE QUESTIONS )
  1. Number of ejected photoelectrons increases with increases

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  2. By photoelectric effect, Einstein proved

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  3. A photocell employs photoelectric effect to convert

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  4. When ultraviolet rays incident on metal plate there photoelectric effe...

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  5. The threshold frequency for photoelectric effect on sodiune correspond...

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  6. The photoelectric work function for a metal surface is 4.125 eV. The c...

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  7. Ultraviolet radiations of 6.2 eV falls on an aluminium surface. Kineti...

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  8. The de-Broglie wavelength of a tennis ball of mass 60g moving with a v...

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  9. The wavelength of de-Broglie wave is 3 mu m, then its momentum (h = 6....

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  10. What is de-Broglie wavelength of electron having energy 10 KeV ?

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  11. Which one of the following property does not support wave theory of li...

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  12. de-Broglie wavelength lambda associated with neutrons is related with ...

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  13. As the intensity of incident light increases

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  14. The de Broglie wave corresponding to a particle of mass m and velocity...

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  15. If particles are moving with same velocity, then which has maximum de-...

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  16. The dual nature of light is exhibited by

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  17. If the momentum of a particle is doubled, then its de-Broglie waveleng...

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  18. Moving with the same velocity, which of the following has the longest ...

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  19. What is the de-Broglie wavelength of the alpha-particle accelerated th...

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  20. A proton and an alpha-particle are accelerated through the same potent...

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