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A mono chromatic source of light operating at 200w emits 4×10^20 protons per second. Find the wave length of the light

A mono chromatic source of light operating at 200w emits 4×10^20 protons per second. Find the wave length of the light

Grade:12

1 Answers

Arun
25763 Points
3 years ago
 
The energy of each photon=
E = (200 J/sec)/(4 * 10^20 /sec)
= 5 * 10^-19 J
 
Now \lambda = hc/ E
\lambda = (6.6* 10^-34) *(3* 10^8)/(5 * 10^-19)
400 nano metre

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