Question
Physics Question on Dual nature of radiation and matter
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-3x108m/s,Plank's constant 6.6 x 10-34J/s)
A
2x1015
B
1x1015
C
5x1015
D
3x1015
E
4x1015
Answer
5x1015
Explanation
Solution
The correct answer is (C):5x1015