The threshold frequency for a metallic surfaces corresponds on an ener – McqOptions

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1.	The threshold frequency for a metallic surfaces corresponds on an energy of 6.2 eV and the stopping potential for a radiation incident on this surface is 5V. The incident radiation lies in
A.	ultra-violet region
B.	infra-red region
C.	visible region
D.	X-ray region
Answer» B. infra-red region

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