[" The kinetic energy of an electron is "E" ,"],[" when the incident wavelength is "lambda" .To "],[" increase the kinetic energy of the electron "],[" to "2E" ,the incident wavelength must be : "]

The K.E of the electron is E when the incident wavelength is lamda . To increase the K.E of the electron to 2E, the incident wavelength must be

The kinetic energy of an electron is E when the incident wavelength is lamda To increase ti KE of the electron to 2E, the incident wavelength must be

The kinetic energy of an electron is E when the incident wavelength is lamda To increase ti KE of the electron to 2E, the incident wavelength must be

When the kinetic energy of an electron is increased , the wavelength of the associated wave will

When the kinetic energy of an electron is increased, the wavelength of the associated wave will

When the incident wavelengths are lamda and lamda//2 the kinetic energies of the emitted photo electrons are E and 2E. The work function of the metal is

When the incident wavelengths are lamda and lamda//2 the kinetic energies of the emitted photo electrons are E and 2E. The work function of the metal is

In a photo-emissive cell, with exciting wavelength lambda , the maximum kinetic energy of electron is K. If the exciting wavelength is changed to ( 3 lambda)/( 4) the kinetic energy of the fastest emitted electron will be :