A 100 watt bulb emits monochromatic light of wavelength 0.5 micro m assuming it to be 30% efficient in coverting electrical energy into light no of photons emitted per sec
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no. of photons=power/h×frequency
shivi14151:
sry galti se send ho gya pura ans likhne se phle
30%electric energy main convert ho gya means 70% of 100 watt means 70 wtt and frequency ki jagah c/wavelength rakhna
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