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The photo electric threshold wavelength ...

The photo electric threshold wavelength for a metal is `2750A^(@)`, The minimum energy of a photon that can produce photoelectric effect in the metal is

A

0.045eV

B

0.45 eV

C

4.5 eV

D

0.0045 eV

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The correct Answer is:
C
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AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-PRACTICE EXERCISEX
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  8. Monochromatic light incident on a metal surface emits electron with K....

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  9. Three metals have work functions in the ratio 2 3:4. Graphs are drawn ...

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  10. Two photons of energies twice and thrice the work function of a metal ...

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  11. The work function of a substance is 4eV. The longest wavelength of lig...

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  12. The photo electric work function of a metal is 1 eV. Light of wave len...

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  13. When a mono chromatic point source of light is at a distance of 0.2m f...

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  14. The work function of a substance is 12.4 eV. The longest wavelength of...

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  15. A surface irradiated with light of wave length 480 nm gives out electr...

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  16. The photoelectric threshold wavelength for a certain metal is 4000A^(@...

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  17. What P.D. must be applied to stop the fastest photo electron emitted b...

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  18. The threshold frequency for photo electric effect for a metal surface ...

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  19. The work functions of metals A and B are in the ratio 1 : 2. If light ...

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  20. When a metal surface is illuminated by a light of wavelength 400nm and...

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