A) 50 watt infrared lamp
B) 1 watt infrared lamp
C) 50 watt ultraviolet lamp
D) 1 watt ultraviolet lamp
E) (e) Both (c) and (d)
Correct Answer: E
Solution :
(e) In this case, for photoelectric emission the wavelength of incident radiations must be less then \[5200{\AA}\] . Wavelength of ultraviolet radiations is less then this value (5200 Å) but wavelength of infrared radiations is higher than this value.You need to login to perform this action.
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