To get output 1 for the following circuit, the correct choice for the input is

The input signal given to a CE amplifier having a voltage gain of 150 is V_i = 2cos(15t + $${\pi \over 3}$$). The corresponding output signal will be

In the given figure, a diode D is connected to an external resistance R = 100 $$\Omega $$ and an e.m.f. of 3.5 V. If the barrier potential developed across the diode is 0.5 V, the current in the citcuit will be

If in a p-n junction, a square input signal of 10 V is applied, as shown,



then the output across R_L will be