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CUSAT 2022 BTech Solved Paper Shift 4

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Question : 42

Total: 200

The number of photons emitted per second from a lamp radiating a power of 10 Watt at a wavelength of 6000A∘ is about

3×1018 per sec
3×1010 per sec
3×108 per sec
1×1024 per sec

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