Q38. An electric bulb of 100 Watts converts 3% electrical energy into light energy. If the wavelength of light emitted is 6625 A, the number of photons emitted in 1 s is?h= 6.625 x 10-34 J.secPhysics — Dawn of Modern Physics — Question 38 of 217A. 1017B. 1019C. 1021D. 1015Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →