CBSE Class 11-science Answered
A bulb emit a light of wavelength 8000 A. Find the no. of photons emitted by the bulb per second of consumes 100 watts power.
Asked by Anil | 25 Jul, 2017, 10:45: AM
Expert Answer
Power of the bulb = 100 watt = work/time
= 100 J s-1
Energy of one photon = E
= hc/λ = 6.626 x10-34 Js x 3 x 108 ms-1 = 2.484 x10-19 s-1
8000 x 10-10m
Answered by Vaibhav Chavan | 25 Jul, 2017, 11:20: AM
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