A monochromatic light source of power 5mW emits `8 xx 10^(15)` photons per second. This light ejects photo electrons from a metal surface. The stopping potential for this set up is 2V. Calculate the work function of the metal.

A monochromatic light source of intensity 5 mW emits (8xx10^15) photons per second . This light ejects photoelectrons from a metal surface. The stopping potential for this setup is 2.0 V. Calculate the work function of the metal.

A monochromatic light source of intensity 5 m W emits (8x10^15) photons per second . This light ejects photoelectrons from a metal surface. The stopping potential for this setup is 2.0 V. Calculate the work function of the metal.

Photons of energy 5.5 eV are incident on a metal surface. If the stopping potential is 3V, then the work function of the metal will be

A monochromatic source of light operating at 200W emits 4 xx 10^20 photons per second. Find the wavelength of the light.

A monochromatic source of light operating at 200W emits 4 xx 10^20 photons per second. Find the wavelength of the light.

If a monochromatic source of light of power 1 kW emits 6xx10^(22) photons per second , then what should be the frequency of light emitted from the source ?