JEE Main2012PhysicsCommunication SystemActual
A 10 ~kW transmitter emits radio waves of wavelength 500 ~m . The number of photons emitted per second by the transmitter is of the order of
Options
- A10³⁷
- B10³¹
- C10²⁵
- D10⁴³
Correct answer
B. 10³¹
Step-by-step solution
Power = n h c (where, n= no. of photons per second) n= 10 10^3 500 6.6 10⁻³⁴ 3 10^8 10³¹