A bulb emits light of wavelength `4500A^@`.The bulb is rated as 150 watt and `8%` of the energy is emitted as light.how many photons are emitted by the bulb per second?

An 80 watt bulb emits monochromatic light of wavelength 480 nm. Calculate the number of photons emitted per second by the bulb?

A 100 W power source emits green light at a wavelength lambda=5000A^@ . How many photons per minute are emitted by the source ?

Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42mW. How many photonsper second, on the average, arrive at a target irradiated by beam? (Asume the entire beam to be incident on a small area of the target)

A monochromatic source, emitting light of wavelength, 600 nm, has a power output of 66W. Calculate the number of photons emitted by this source is 2 minutes.

A I kw radio transmitter operates at a frequency of 880 Hz how many photons per second does it emit?

The alkali metal which emits a light of longest wavelength in the flame test is-

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 photon of wavelength 4x10^-7 m strikes a metal surface work function of the metal is 2.13eV calculate the kinetic energy of the emitted photoelectrons in eV

A monochromatic light of wavelength 600 nm is emitted from slit of thickness 1 mm. if the distance between the slit and the screen is 2m. Then calculate the gap between the two adjacent first maximum points of the central maximum.