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प्रश्न
If the mean wavelength of light from sun is taken as 550 nm and its mean power as 3.8 × 1026 W, then the average number of photons received by the human eye per second from sunlight is of the order of
पर्याय
1045
1042
1054
1051
उत्तर
1045
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संबंधित प्रश्न
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