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Question
Draw a well labelled diagram of photoelectric cell.
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Solution
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RELATED QUESTIONS
If the work function of a metal is 3 eV, calculate the threshold wavelength of that metal.
(Velocity of light = 3 x 108 m/s, Planck’s constant = 6.63 x 10–34 J.s.; 1 eV = 1.6 x 10–19 J)
Explain the observations made by Hertz and Lenard about the phenomenon of photoelectric
emission.
The number of photoelectrons emitted _______.
(A) varies inversely with frequency
(B) varies directly with frequency
(C) varies inversely with intensity
(D) varies directly with intensity
The momentum associated with the photon is given by_______.
(a) hv
(b) `"hv"/c`
(c) hE
(d) hλ
