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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Light rays of wavelengths 6000 A° and of photon intensity 39.6 watts/m² is incident on a metal surface. If only one percent of photons incident on the surface emit photo electrons, then the number of electrons emitted per second per unit area from the surface will be
[ Planck constant = 6.64 x 10^-34 J - S; Velocity of light = 3 x 10⁸ ms^-1]

A. 12 x 10¹⁸

B. 10 x 10¹⁸

C. 12 x 10¹⁷

D. 12 x 10¹⁵

E. None of the above

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Correct choice: C

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