Pravansu Panda posted an Question
November 24, 2021 • 16:56 pm 30 points
  • IIT JAM
  • Chemistry (CY)

A bulb of 40 w is producing a light of wavelength 620 nm with 80% of efficiency then the number of photons emitted by the bulb in 20 seconds are (1ev 1.6x 10-19

A bulb of 40 W is producing a light of wavelength 620 nm with 80% of efficiency then the number of photons emitted by the bulb in 20 seconds are (1eV 1.6x 10-19 J, hc 12400 eV Å)

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