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Four photon of lambda gt lambda(0) are i...

Four photon of `lambda gt lambda_(0)` are incident on metal surface ……..photo -electron will be emitted.

A

Zero

B

One

C

Two

D

Four

Text Solution

Verified by Experts

The correct Answer is:
A
The condition for the emission of photo-electrons
`vgtv_(0)`
`therefore lambda lt lambda_(0)[because lambda=(c )/(v)]`
`therefore` photo-electron will not be emitted,
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KUMAR PRAKASHAN-DUAL NATURE OF RADIATION AND MATTER-Section-D (multiple choice questions (MCQs)
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  7. Threshold wavelength of metal is 30 Å If radiation of 2000Å Is inciden...

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  9. What will be maximum value of wavelength by which photo-electric emiss...

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  12. If photo-electric effect,when frequency of incident radiation is doubl...

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  13. For metals cesium ,potassium ,sodium and lithium graph of stopping pot...

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  14. Maximum kinetic energy of photoelectron emitted is independent of ……

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  18. Maximum speed of electron emitted from metal surface is 5xx10^(6 )ms^(...

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  19. The work function of a metal surface is 4.2 eV. The maximum wavelength...

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  20. Threshold frequency for metal surface is 4xx10^(14) Hz.When radiation ...

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