Physics Test - ...

P and Q are like parallel forces. If P is moved parallel to itself through a distance x, then the resultant of P and Q moves through a distance:

An engine pumps up 100 kg of water through a height of 10 m in 5s. Given that the efficiency of engine is 60%. If g = 10 ms^-2, the power of the engine is :

During projectile motion, the horizontal velocity

The resultant of P and Q is R. If P is reversed, Q remains the same, the new resultant S is at right angle to R. The value of P / Q is

In the circuit given below, an A.C. voltage V = 220 volt (r.m.s.) is applied. The maximum voltage across the capacitor will be

For a transistor, the current gain α is 0.96. It is used as an amplifier in a common base circuit with a load resistance of 4 kΩ. If the dynamic resistance of the emitter-base junction is 48Ω, then the voltage gain is

The depletion layer in a p-n junction diode is 10-6m wide and its knee potential is 0.5 V. What is the inner electric field in the depletion region?

Of the diodes shown in the following diagrams, which one is reverse biased?

For the given circuit to act as a full-wave rectifier, the AC input should be connected across ..i... and ..ii... and the DC output should appear across ...iii... and ...iv....

i, ii, iii and iv, respectively, are

Two particles start simultaneously from the same point and move along two straight lines, one with uniform velocity  and the other from rest with uniform acceleration . Let be the angle between their directions of motion. The relative velocity of the second particle w.r.t. first is least after a time of