. A photoelectric surface is illuminated successively by monochromatic light of wavelength
lambda and lambda 2 If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the surface of the material is: ( h = Planck's constant, c = speed of light)
Best Answer
Correct Option is: (B) 
Explanation
Let ∅ₒ be the work function of the surface of the material. Then, According to Einstein's photoelectric equation, the maximum kinetic energy of the emitted photoelectrons in the first case is 
And in the second case 
According to question we know that 
Therefore,
Final Answer
The work function of the surface of the material is
Related questions
