JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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A bulb emits light of

\lambda=4500 ~\mathop {\text{A}}\limits^ \circ

. The bulb is rated as 150 watt and

8 \%

of the energy is emitted as light. How many photons are emitted by the bulb per second?

View answer and explanation

Correct option: A

27.2 \times 10^{18}

Option A (

27.2 \times 10^{18}

) is correct because it is the number of photons emitted per second, calculated using the energy of one photon and the total energy emitted as light.

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