A 160 watt light source is radiating light of wavelength `6200 �` uniformly in all directions.
Channel: Doubtnut
Date: 2020-01-26

A 160 watt light source is radiating light of wavelength `6200 �` uniformly in all directions. The photon flux at a distance of `1.8 m` is of the order of (Plank\'s constant `6.62 xx 10^(-34) J-s`)