Question:
A point source emitting photons of 2 eV energy and 1 W of power is kept at a distance of 1m from a small piece of a photoelectric material of area 10-4 m2 . If the efficiency of generation of photoelectrons is 10%, then the number of photoelectrons generated are πΓ1012 per second. The value of π is __________ (rounded off to two decimal places).
Given: 1eV = 1.6 Γ 10β19 J
A point source emitting photons of 2 eV energy and 1 W of power is kept at a distance of 1m from a small piece of a photoelectric material of area 10-4 m2 . If the efficiency of generation of photoelectrons is 10%, then the number of photoelectrons generated are πΓ1012 per second. The value of π is __________ (rounded off to two decimal places).
Given: 1eV = 1.6 Γ 10β19 J
Given: 1eV = 1.6 Γ 10β19 J
Updated On: Oct 1, 2024
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Correct Answer: 2.3 - 2.7
Solution and Explanation
The correct answer is: 2.3 to 2.70 (approx)
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