Eamcet Physics - 2 nd Year : Unit 7.1 ( Dual Nature of Matter And Radiation ) - Dual Nature of Matter And Radiation Free Online Tests | Mock Tests | Preparation | Practice Tests

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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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Electrons ejected from the surface of a metal, when light of certain frequency is incident on it, are stopped fully by a retarding potential of 3 volts. Photo electric effect in this metallic surface begins at a frequency 6 x 10¹⁴s^-1. The frequency of the incident light in s^-1 is [h=6 x 10^-34J-sec; charge on the electron = 1.6 x 10^-19C ]

A. 7.5 x 10¹³

B. 13.5 x 10¹³

C. 7.5 x 10¹⁵

D. 14 x 10¹⁴

E. None of the above

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Correct choice: D

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