How many photons per second are emitted by a 100 W source if each photon has energy 3.14 × 10⁻¹⁹ J? - ELECTRONIC DEVICES Quiz | GKFix.in

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Question

How many photons per second are emitted by a 100 W source if each photon has energy 3.14 × 10⁻¹⁹ J?

A. 2 × 10¹⁶ photons/s
B. 3 × 10¹⁶ photons/s
C. 4 × 10¹⁶ photons/s
D. 5 × 10¹⁶ photons/s