The photoelectric threshold wavelength of a certain metal is 3000Å. I – McqOptions

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1.	The photoelectric threshold wavelength of a certain metal is 3000Å. If the radiation of 2000Å is incident on the metal [MNR 1998; KCET 1994]
A.	Electrons will be emitted
B.	Positrons will be emitted
C.	Protons will be emitted
D.	Electrons will not be emitted
Answer» B. Positrons will be emitted

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