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Dual nature of radiation is shown by...

Dual nature of radiation is shown by

A

diffraction and reflection

B

refraction and diffraction

C

photo - electric effect alone

D

photo electric effect and diffraction

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The correct Answer is:
D
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MOTION-PHOTOELECTRIC EFFECT -EXERCISE-1 (OBJECTIVE QUESTIONS)
  1. Dual nature of radiation is shown by

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  2. In photoelectric effect, emitted electrons are

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  3. The photo electrons emitted from the surface of sodium metal are

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  4. Photo cell is a device to

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  5. Energy of a photon is 20 eV then its momentum is

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  6. Two photons, each of energy 2.5 eV are simultaneously incident on the ...

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  7. Let (nr) and (nb) be respectively the number of photons emitted by a r...

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  8. Four elements A, B, C, D have work function 2, 2.4, 2.8, 3.2 eV. ...

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  9. The equation E=pc is valid

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  10. The wavelength of a spectral line is 4000 Å. Calculate its frequency a...

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  11. A surface ejects electrons when illuminated by blue light but none wit...

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  12. Electrons of 0.5 eV energy are emitted from a metal surface when ...

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  13. Which metal will be suitable for a photo electric cell using light...

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  14. An electromagnetic radiation of frequency 3xx10^(15) cycles per second...

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  15. The work function of metal is 1 eV. Light of wavelength 3000 Å is inc...

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  16. Two differenct photons of energies, 1 eV and 2.5 eV, fall on two ...

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  17. The KE of the photoelectrons is E when the incident wavelength is (lam...

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  18. The threshold wavelength of tungsten is 2300 Å. If ultra voile...

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

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  20. The stopping potential for photo electrons does not depend on

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