In lab experiment related to the inverse square law for intensity of light, our task was to measure the experimental value of Plank's constant and work function of the metal surface.Select one:TrueFalse

The following apparatus was used toa.Calculate the value of Plank's constantb.Prove inverse square law for intensity of lightc.None of thesed.Calculate charge to mass ratio of electrone.Measure strength of magnetic field produced due to Helmholtz coils

n the experiment performed to calculate the value of Plank's constant, the distance of the light source from a photo diode was varied and the corresponding photo current was recorded. Values of current and distance were used in derived formula to calculate planks constant.

In the experiment performed to calculate the value of Plank's constant, various color filters were used to allow light of specific frequencies to pass into the apparatus.Select one:TrueFalse

Light of wavelength 180nm strikes a metal target and photoelectrons are emitted. It is noticed that the photocurrent drops to zero at stopping potential of 0.8 V. The work function of the metal surface is

The work function of a metal is 31 eV. To eject a photoelectron of zero velocity from the surface of the metal the wavelength of incident light should be above