Dual Nature of ...

When a monochromatic point source of light is at a distance 0.2 m from a photoelectric cell, the saturation current and cut-off voltage are 12.0 mA and 0.5 V. If the same source is placed 0.4 m away from the photoelectric cell, then the saturation current and the stopping potential respectively are

The threshold wavelength for a metal having work function W₀ is λ₀. What is the threshold wavelength for a metal whose work function is W₀ /2 ?

The time taken by a photoelectron to come out after the photon strikes is approximately

Light of wavelength λ strikes a photo-sensitive surface and electrons are ejected with kinetic energy E. If the kinetic energy is to be increased to 2E, the wavelength must be changed to λ\' where

If in a photoelectric experiment, the wavelength of incident radiation is reduced from 6000 Å to 4000 Å, then

Stopping potential required to reduce the photoelectric current to zero

Which of the following is dependent on the intensity of incident radiation in a photoelectric experiment?

The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately

The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy of 6 eV fall on it is 4 eV. The stopping potential in volts is

Work function of a metal is 2.1 eV. Which of the waves of the following wavelengths will be able to emit photoelectrons from its surface