Physics Test - ...

1 KWh = _____ J

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

A cricket ball of mass \(200 gms\) moving with a velocity of \(20\; m/sec\) is brought to rest by a player in \(0.1\; sec\). The average force applied by the player is

When an electron-positron pair annihilates, how much energy is released?

For a transistor, the current gain \(\alpha\)is \(0.96\). It is used as an amplifier in a common base circuit with a load resistance of \(4 k \Omega\). If the dynamic resistance of the emitter-base junction is \(48\Omega\), then the voltage gain is

An electron moves at right angle to a magnetic field of 1.5 x 10^-2T with a speed of 6 x 10⁷m/s. If the specific charge of the electron is 1.7 x 10¹¹C/kg, the radius of the circular path will be :

If the forces of magnitude 12 Kg wt, 5 Kg wt and 13 Kg wt acting at a point are in equilibrium, then the angle between the two forces 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

If \(M_0\)is the mass of an oxygen isotope \(_8O^{17}\) and \(M_p\)and \(M_n\)are the masses of a proton and a neutron, respectively, then what is the nuclear binding energy of the isotope

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: