Photoelectric emission from a given surface of metal can take place when the value of a ‘physical quantity’ is less than the

Photoelectric emission from a given surface of metal can take place when the value of a ‘physical quantity’ is less than the energy of incident photon. The physical quantity is :
A. Threshold frequency
B. Work function of surface
C. Threshold wave length
D. Stopping Potential

Photoelectric emission from a given surface of metal can take place when the value of a ‘physical quantity’ is less than the energy of incident photon

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