Physics Test - 8

An ideal diode is connected in a circuit with resistance R = 50Ω and V = 10V. If an AC input signal shown in the figure is given to the circuit, then the maximum and minimum value of output voltage (without load) is

The logic gate having an output of 1 is

A body of mass 2kg is placed on a horizontal surface having coefficient of kinetic friction 0.4 and coefficient of static friction 0.5. If a horizontal force of 2.5N is applied on the body, the frictional force acting on the body will be (g = 10ms^–2)

The output characteristics of an n-p-n transistor represent, [I_C = Collector current, V_CE = potential difference between collector and emitter, I_B = Base current, V_BB = Voltage given to base, V_BE = the potential difference between base and emitter]

If E_c and E_m are peak values of carrier and modulating signals respectively then for 100% modulation

A ship of mass 3000 kg initially at rest is pulled by a force of 1.8 x 10⁴ N through a distance of 3 m. Assuming that the resistance due to water is negligible. The speed of the ship is

A body of mass 2 kg moving with a velocity of 3 ms^–1 collides head on with a body of mass 1 kg moving in opposite direction with a velocity of 1 ms^–1. After collision, the two bodies stick together and move with a common velocity. Find the common velocity.

If the Earth shrinks such that its density becomes 8 times to the present value, then the new duration of the day in hours will be ______.

A man is going due east with a velocity of 5 m/sec. It is vertically raining downwards with a velocity of 4 m/sec. At what angle should he hold the umbrella to the vertical so as to protect himself from the rain

An artificial satellite of mass m is moving in a circular orbit of radius r around the earth of mass M. The angular momentum of the satellite with respect to the centre of the earth is