which of the following experiment in Photoelectric effect will support particle nature of light?

Options

A. Photocurrent is set up almost instaneously even with faint light of sufficiently small wavelength.
B. Existence of cut off potential which depends upon wavelength of radiation incident on emitter
C. Existence of thresold wavelength for incident radiation above which no photocurrent can be set up.
D. Existence of saturation current which increase with increase in intensity of radiation incident on emitter.

Answer

A, B, C

Explanation

Obrivation in 'A' can be explained only when we assume energy of incident radiation to be in form some packets. Observetion in 'B' and 'C' can be explained by Einstein formula `k=(hc)/(lambda)-Phi` which supports particle nature.