Draw suitable graphs to show the variation of photoelectric current with collector plate potenetial for
a fixed frequency but different intensities `L_1>L_2>L_3` of radiation?

The figure VSAQ 29 shows a plot of three curves a,b,c, showing the variation of photocurrent in collector plate potential for three different intensities I_1 , I_2 and I_3 having frequencies v_1 , v_2 and v_3 respectively incident on a photosensitive surface. Point out the two curves for which the incident raidations have the same frequency but different intensities.

Draw a plot showing the variation of photoelectric current versus the intensity of incident radiation on a given photosensitive surface.

Explain the effect of increase of intensity of incident radiation on photoelectric current with suitable graphs.

Draw a graph showing the variation of stopping potential with frequency of incident raditions in relation to photoelectric effect. Deduce an expression for the slope of this graph using Einstein's photoelectric equation.

Plot a graph showing the variation of stopping potential with the frequency of incident radiation for two different photosensitive materials having work functions W_1 and W_2 (W_1>W_2). On what factors does the slope and intercept of the lines depends.

Write Einstein's photoelectrical equation in terms of the stopping potential and the threshold frequency for a given photosensitive material. Draw a plot showing the variation of stopping potential vs the frequency of incident radiation.

The base current is 100 muA and collector-current is 3mA. calculate the values of beta, l_e and alpha .

In the circuit shows find the phase difference between the currents through L and R_I

The given graph shows the variation of charge q versus potential differences V for two capacitors C_1 and C_2 . The two capacitors have the same plate separation but the plate area of C_2 is double than that of C_1 . Which of the lines in the graph correspond to C_1 and C_2 and why?