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The mass of photon at rest is:...

The mass of photon at rest is:

A

zero

B

`1.67 xx 10^(-35) kg`

C

`1 a.m.u.`

D

`9 xx 10^(-31) kg`.

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MODERN PUBLICATION-UNIT TEST -07-EXERCISE
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  2. If a phtoton has velocity c and frequency v ,then wchich of the follow...

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  3. The mass of photon at rest is:

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

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

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  6. The energy of a photon of light is 3 eV.Then,the wavelength of photon ...

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  7. A source S1 is producing 10^(15) photons s^(-1) of wavelength 5,000 ov...

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  8. Monochromatic light of wavelength 667 nm is produced by a helium neon ...

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  9. The photoelectric work function for a metal surface is 4.125 eV.The cu...

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  10. The work functins for metals,A ,B and C are 1.92 eV,2 eV and 5 eV reps...

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  11. When ultraviolet rays are incident on a metal plate,the photoelectric ...

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  12. A photocell is illuminated by a small bright source placed 1 m away .w...

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  13. A photoelectric cell is illuinated by a point source of light 1 m away...

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  14. A 5 W source emits monochromatic light of wavelength 5,00 overset @A.W...

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  15. As the intensity of incident light incrases:

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  16. Which of the following statements is correct?

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  17. The number of photoelectrons emited for a light of a freqeuency v (hig...

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  18. When monochromatic radition of intensity I falls on a metal surface,th...

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  19. The cathode of a photoelectric cell is hanged,such that the work func...

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  20. Einstien's work on photoelectric effect given support to:

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