1.

For the photoelectric effect, the maximum kinetic energy \[{{E}_{k}}\] of the emitted photoelectrons is plotted against the frequency n of the incident photons as shown in the figure. The slope of the curve gives [CPMT 1987; MP PET 2001; DPMT 2002]

A.            Charge of the electron    
B.            Work function of the metal
C.            Planck's constant               
D.            Ratio of the Planck?s constant to electronic charge
Answer» D.            Ratio of the Planck?s constant to electronic charge


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