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If in a photo-electric experiment, the w...

If in a photo-electric experiment, the wavelength of incident radiation is reduced from `6000 Å " to " 4000 Å` then

A

stopping potential will decrease

B

stopping potential will increase

C

kinetic energy of emitted electrons will decrease

D

the value of work function will decrease

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The correct Answer is:
B
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CHHAYA PUBLICATION-QUANTUM THEORY-Exercise (Multiple Choice Questions)
  1. A monochromatic source of light is kept at a distance of 0.2 m from a ...

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  2. For a monochromatic light incident on a metal surface, the stopping po...

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  3. If in a photo-electric experiment, the wavelength of incident radiatio...

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  4. If the stopping potential for photoelectric emission is 0.75 V, the ki...

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  5. For a monochromatic light incident on a metal surface, the maximum vel...

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  6. For two monochromatic radiations incident on the same metal surface, t...

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  7. Energy of photon incident on a metal plate is twice its work function....

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  8. Work function of zinc is twice that of sodium. If the photoelectric th...

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  9. Threshold wavelength of a metal for electron emission is 5200Å. Which ...

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  10. When photons of energy 6eV is incident on a metal surface, the kinetic...

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  11. In case of photoelectric effect, the incident photon

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  12. Which of the following quantities has the same dimension as that of Pl...

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  13. In case of photoelectric effect, the graph of kinetic energy of photoe...

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  14. A body absorbs 5 xx 10^(29) photons of frequency 10^(20) Hz. Which of ...

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  15. The momentum of a photon (frequency = f, rest mass = 0) is

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  16. A monochromatic radiation of wavelength lamda and intensity I is incid...

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  17. The threshold frequency for a photosensitive metal is 3.3 xx 10^(14) H...

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  18. The anode voltage of a photocell is kept fixed. The wavelength lamda o...

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  19. A body of mass 60g is moving with a velocity of 10 m.s^(-1). The de Br...

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  20. If the de Broglie wavelength of a gas molecule at 0^(@)C be lamda, wha...

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