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Question

The maximum kinetic energy of photoelectrons is directly proportional to ______ of the incident radiation. The missing word can be:

A
intensity
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B
wavelength
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C
wave number
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D
frequency
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Solution

The correct options are
A wave number
D frequency
The maximum kinetic energy of photoelectrons is directly proportional to wave number or frequency of the incident radiation. Also, the maximum kinetic energy of photoelectrons is directly proportional to wavelength
The energy of incident radiation
E=hν=hc¯ν=hcλ
The maximum kinetic energy of photoelectrons =Ew, where w is the work function of the metal.

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