A bulb is rated at 150 text{ W}, converting 8 | vedclass

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(D) The total power of the bulb is $P_{	ext{total}} = 150 	ext{ W}$.The power converted into light is $P_{	ext{light}} = 150 	imes 0.08 = 12 	ext

Vedclass · Accepted Answer

$2.71 	imes 10^{19}$

Vedclass · Answer

(D) The total power of the bulb is $P_{	ext{total}} = 150 	ext{ W}$.The power converted into light is $P_{	ext{light}} = 150 	imes 0.08 = 12 	ext{ J/s}$.The energy of a single photon is given as $E_{	ext{photon}} = 4.42 	imes 10^{-19} 	ext{ J}$.The number of photons emitted per second $(n)$ is calculated by dividing the power of light by the energy of one photon:$n = \frac{P_{	ext{light}}}{E_{	ext{photon}}} = \frac{12}{4.42 	imes 10^{-19}} \approx 2.715 	imes 10^{19}$ photons per second.Therefore, the correct option is $D$.

$A$ bulb is rated at $150 \text{ W}$, converting $8\%$ of its energy into light. If the energy of one photon is $4.42 \times 10^{-19} \text{ J}$, how many photons are emitted by the bulb per second?

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