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The work function of a surface of a pho...

The work function of a surface of a photosensitive material is `6.2 eV`. The wavelength of the incident radiation for which the stopping potential is `5 V` lies in the

A

Infrarted region

B

X - ray region

C

Ultraviolet region

D

Visible region

Text Solution

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The correct Answer is:
C
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MOTION-PHOTOELECTRIC EFFECT -EXERCISE - 3 SECTION -A (Previous Year Problems (NEET ))
  1. A 5 W source emits monochromatic light of wavelength 5000 Å. When plac...

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  2. Monochromatic light of frequency 6.0 xx 10^(14) Hz is produced by a la...

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  3. The work function of a surface of a photosensitive material is 6.2 eV...

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  4. The number of photoelectrons emitted for light of a frequency v (highe...

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

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  6. The figure shows a plot of photo current versus anode potential for a ...

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  7. A source S(1) is producing 10^(15) photons/s of wavelength 5000 Å Anot...

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  8. The potential difference that must be applied to stop the fastest phot...

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  9. The electron in the hydrogen atom jumps from excited state (n=3) to it...

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  10. Photoelectric emission occurs only when the incident light has more th...

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  11. The work functions for metals A, B and C are respectively 1.92 eV, 2....

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

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  13. Light of two different frequencies whose photons have energies 1eV and...

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  14. In photoelectric emission process from a metal of work function 1.8 eV...

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

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  16. An electron in the hydrogen atom jumps from excited state n to the gro...

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  17. Monochromatic radiation emitted when electron on hydrogen atom jumps f...

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  18. A modern 200 W sodium street lamp emits yellow light of wavelength 0.6...

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  19. A alpha -parhticle moves in a circular path of radius 0.83 cm in th...

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  20. An electrons of a stationary hydrogen aton passes form the fifth enegr...

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