A source `S_(1)` is producing `10^(15)` photons/s of wavelength `5000 Å` Another source `S_(2)` is producing `1.02 xx 10^(15)` photons per second of wavelength `5100 Å`. Then `("power of" `S_(2))/("power of" S_(1))` is equal to

Options

A. `1.00`
B. `1.02`
C. `1.04`
D. `0.98`

Answer

A

Explanation

`n=(P)/(((hc)/(lamda))) rArr P=(nhc)/(lamda)`
`:. (P_(2))/(P_(1))=(n_(2)lamda_(1))/(n_(1) lamda_(2))=(1.02 xx 10^(15) xx 5000)/(10^(15) xx 5100) = 1`