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Light of wavelength lambda falls on meta...

Light of wavelength `lambda` falls on metal having work functions `hc//lambda_(0)` . Photoelectric effect will take place only if :

A

`lambdagelambda_(0)`

B

`lambdage2lambda_(0)`

C

`lambdalelambda_(0)`

D

`lambdalelambda_(0)//2`

Text Solution

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The correct Answer is:
C
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NARAYNA-DUAL NATURE OF RADIATION AND MATTER-C. U. Q
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  8. The photo electrons emitted from the surface of sodium metal are

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  9. The necessary condition for photo electric emission is

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  10. At stopping potential, the photo electric current becomes

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  11. In photoelectric effect, stopping potential depends on

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  12. Work function is the energy required

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  13. Threshold wavelenght depends on

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  14. If the work function of a mental is phi(0) then its threshold waveleng...

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  17. a source of light in placed at a distance 4m from a photocell and the...

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