Q: From the above figure the values of stopping potentials for M1 and M2 for a frequency v3 (> v02) of the incident radiations are V1 and V2 respectively. Then the slope of the line is equal to

(a)

(b)

(c)

(d)

Ans: (a)

Sol:

…(i)

Similarly ,

…(ii)

subtracting (i) from(ii)