A 60W lamp is emitting green light with wavelength 5550×10−10m 5550 × 10^{- 10} m . If 5% of the electrical energy of the lamp is converted to light, how many photons are being emitted by the lamp in 1s. [h=6.63×10−34] \left [ h = 6.63 × 10^{- 34} \right ]

Question

A 60W lamp is emitting green light with wavelength 5550×10−10m 5550 × 10^{- 10} m . If 5% of the electrical energy of the lamp is converted to light, how many photons are being emitted by the lamp in 1s.  [h=6.63×10−34] \left [ h = 6.63 × 10^{- 34} \right ]

Accepted Answer

খ. 8.37 x 10¹⁸

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