Photoelectric Effect IIT JEE

Hi I am going to appear in the IIT JEE entrance exam . Will you please provide the last year IIT JEE entrance exam Photoelectric Effect questions for practice ?

[Quick Sam]

Here I am providing the list of few IIT JEE entrance exam Photoelectric Effect questions which you are looking for.

When a monochromatic point source of light is 0.2 m from a photoelectric cell, the cut-off voltage and the saturation current are respectively 0.6 V and 18.0 mA. The same source is shifted to 0.6 m away, what would happen?

a) The stopping potential will be 0.2 V
b) The stopping potential will be 0.6 V
c) The saturation current will be 6.0 mA
d) The saturation current will be 2.0 mA

Electrons with a kinetic energy of 6.023 x 104 J/mol are evolved from the surface of a metal, when exposed to a radiation of wavelength of 600 nm (photoelectric effect). The minimum amount of energy required to remove an electron from the metal atom is :
(EAMCET 2009-E)

a) 2.3125 x 10-19 J

b) 3 x 10-19 J

c) 6.02 x 10-19 J

d) 6.62 x 10-34 J

1) The work function (Φ) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300nm wavelength falls on the metal is: Metal

Metal Li Na K Mg Cu Ag Fe Pt W


Φ (in eV) 2.4 2.3 2.2 3.7 4.8 4.3 4.7 6.3 4.75