KEAM 2023 Physics and Chemistry Solved Paper

Question : 7 of 120

Marks: +1, -0

A laser source emits light of wavelength 300‌nm and has a power of 3.3‌mW. The average number of photons emitted per second is :
(Speed of light =3×106m∕ s, Plank's constant =6.6×10−34J∕ s )