Dual Nature of Radiation and Matter - Result Question 27
29. When the energy of the incident radiation is increased by , the kinetic energy of the photoelectrons emitted from a metal surface increased from to . The work function of the metal is :
[2014]
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 29. (b)
Solution:
- (b) According to Einstein’s photoelectric equation,
We have
and
Therefore, from above two equations
Work function