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A bulb emits light of wavelength (λ)=4500 oA . The bulb is rated as 150 watt and 8 % of its energy is emitted as light. If number of photons emitted is x×1019, then the value of x is: (Take planck's constant h=6×10−34J s and speed of light c=3×108 m s−1) |
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Answer» A bulb emits light of wavelength (λ)=4500 oA . The bulb is rated as 150 watt and 8 % of its energy is emitted as light. If number of photons emitted is x×1019, then the value of x is: (Take planck's constant h=6×10−34J s and speed of light c=3×108 m s−1) |
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