Dual Nature of Radiation and Matter - Result Question 55
59. In a photo-emissive cell, with exciting wavelength , the fastest electron has speed . If the exciting wavelength is changed to , the speed of the fastest emitted electron will be
[1998]
(a)
(b)
(c) less than
(d) greater than
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Answer:
Correct Answer: 59. (d)
Solution:
(d)
So,