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Karnataka Board PUCPUC Science Class 11

P is It Always True that for Two Sources of Equal Intensity, the Number of Photons Emitted in a Given Time Are Equal? - Physics

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Question

Is it always true that for two sources of equal intensity, the number of photons emitted in a given time are equal?

Short/Brief Note
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Solution

Let the source's area be A, and intensity of the source be I. The energy of each emitted photonis E. Then, the number of photons emitted in a given time will be `n = I/(AE)`

If the areas of the sources and the wavelengths of light emitted by the two sources are different, then the number of photons emitted will be different.

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Experimental Study of Photoelectric Effect
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Chapter 20: Photoelectric Effect and Wave-Particle Duality - Short Answers [Page 363]

APPEARS IN

HC Verma Concepts of Physics Vol. 2 [English] Class 11 and 12
Chapter 20 Photoelectric Effect and Wave-Particle Duality
Short Answers | Q 2 | Page 363

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