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2 nd Year : Unit 7.1 ( Dual Nature of Matter And Radiation ) - Dual Nature of Matter And Radiation

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The threshold frequency for a metal is 10¹⁵ Hz. When light of wavelength 4000 Å is made incident on it, them

A. photo electrons will be emitted from it with zero speed

B. photoelectric emission will not be started by it

C. photo electrons will be emitted with speed 10⁵ m/s

D. photo electrons will be emitted with speed 10³ m/s

E. None of the above

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Correct choice: B

Explanation:

None

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Eamcet Physics 2 nd Year : Unit 7.1 ( Dual Nature of Matter And Radiation ) - Dual Nature of Matter And Radiation

Eamcet Physics
2 nd Year : Unit 7.1 ( Dual Nature of Matter And Radiation ) - Dual Nature of Matter And Radiation