A certain transition emits `6.37 xx 10^(15)` quats per second per square .Calculate the power out put in joule equare metre per second .Given `lambda = 632.8 nm`

A certain transition emits 6.37 xx 10^(15) quanta per second per square meter. Calculate the power output in joule square metre per second. Given lambda = 632.8 nm

The power output for a certain laswer transition was found to be 2.79 watt per square meter. Givne lambda = 520 nm, calculate the number of quanta emitted per square meter per second.

A bulb emits 2 xx 10^20 photons of wave length 400 nm in one second. Calculate the rate of emission of photons per second.

A sodium lamp emits 3.14xx 10^(20) photons per second. Calculate the distance from sodium lamp where flux of photon is one photons per second per cm^(2)

A monochromatic source of light emits photons of frequency 6 xx 10^(14 )Hz . The power emitted by the source is 8 x 10^(-3)W. Calculate the number of photons emitted per second. (Take h = 6.63 xx 10^(-34) Js )

A certain computer performs 1.5 xx 10^(8) calculations per second. How many seconds would it take this computer to perform 6.0 xx 10^(16) calculations?

A 100 watt bulb emits monochromatic light of wavelength 400 nm. Calculate the number of photons emitted per second by the bulb.