If 5 of the energy supplied to a bulb

Asked by admin @ 17/08/2021 in Physics viewed by 251 People

If 5% of the energy supplied to a bulb is radiated as visible light, the number of visible quanta emitted per second by a 100 W bulb, assuming the wavelength of visible light to be 5.6 × 10⁻⁵ cm, is(a) 1.4 × 10⁹(b) 1.4 × 10²⁰(c) 2 × 10¹⁹(d) 2 × 10²⁰

Answered by admin @ 17/08/2021

d) 2 × 10²⁰

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