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The threshold freuency for a metallic su...

The threshold freuency for a metallic surface corresponds to an energy of 6.2 e and the stopping potential for a radiation incident on this surface is 5 V.The incident radiation lies in:

A

ultraviolet region

B

infra-red-region

C

visible region

D

X-ray region

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MODERN PUBLICATION-UNIT TEST -07-EXERCISE
  1. According to Einstein's photoelectric equation, the graph between kine...

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  2. The surface of a metal is illuminted with the light of 400 nm.the kine...

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  3. The threshold freuency for a metallic surface corresponds to an energy...

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  4. This question has statement - 1 and statement - 2 of the four choice g...

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  5. Two identical photocathodes receive the light of frequencies f1 and f2...

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  6. The anode vollage of a photocell is kept fixed . The wavelength lambda...

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  7. The de-Broglie wavelength of a tennis ball of mass 60 g moving wiht a ...

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  8. If the kinetic energy of a free electron doubles,its de-Broglie wavele...

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  9. A radiation of energy E falls normally on a perfecly reflecting surfac...

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  10. Direction:Answer the MCQ no.15 to 17 on the basis of the folowing para...

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  11. Wave property of electron implies that they will show diffraction effe...

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  12. Wave property of electron implies that they will show diffraction effe...

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  13. Wavelength of the radiation of freuquency 100 Hz is :

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  14. Planck's constant has the dimetnsion of

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  15. The value of Planck's constant is

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  16. The energy of a photon of wavelelngth lambda is

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  17. If a phtoton has velocity c and frequency v ,then wchich of the follow...

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  18. The mass of photon at rest is:

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  19. Monochromatic light of frequency 6 xx 10^(14) Hz is produced by a LAS...

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  20. Which one among the following shows particle nature of ligth?

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