List of top Physics Questions asked in AP EAPCET

A galvanometer having 30 divisions has a current sensitivity of \(0.0625 \, \frac{\text{div}}{\mu\text{A}}\). If it is converted into a voltmeter to read a maximum of 6 V, then the resistance of that voltmeter is:
Four capacitors are connected as shown in the figure. If \( C_1, C_2, C_3 \) and \( C_4 \) are in the ratio \( 1:2:3:4 \), then the ratio of the charges on the capacitors \( C_2 \) and \( C_4 \) is
In a meter bridge, the null point is located at 20 cm from the left end of the wire when resistances \( R \) and \( S \) are connected in the left and right gaps respectively. If the resistance \( S \) is shunted with \( 60\,\Omega \) resistance, the null point shifted by 5 cm, then the values of \( R \) and \( S \) are respectively:
In the given circuit, the internal resistance of the cell is zero. If \( i_1 \) and \( i_2 \) are the readings of the ammeter when the key (K) is opened and closed respectively, then \( i_1 : i_2 = \)
internal resistance of the cell is zero
If a wire of length \( L \) carrying a current \( i \) is bent in the shape of a semi-circular arc as shown in the figure, then the magnetic field at the centre of the arc is:
A ray of light incidents at an angle of \(60^\circ\) on the first face of a prism. The angle of the prism is \(30^\circ\) and its second face is silvered. If the light ray inside the prism retraces its path after reflection from the second face, then the refractive index of the material of the prism is
The change in internal energy of given mass of a gas, when its volume changes from \( V \) to \( 3V \) at constant pressure \( P \) is
(\( \gamma \) - Ratio of the specific heat capacities of the gas)
A sound wave of frequency 500 Hz travels between two points X and Y separated by a distance of 600 m in a time of 2 s. The number of waves between the points X and Y are
In an experiment, two polaroids are arranged such that the intensity of the polarised light emerged from the second polaroid is 37.5% of the intensity of the unpolarised light incident on the first polaroid. Then the angle between the axes of the two polaroids is
A monatomic gas at a pressure of 100 kPa expands adiabatically such that its final volume becomes 8 times its initial volume. If the work done during the process is 180 J, then the initial volume of the gas is
The efficiency of a Carnot's heat engine is \( \frac{1}{3} \). If the temperature of the source is decreased by \(50^\circ \text{C}\) and the temperature of the sink is increased by \(25^\circ \text{C}\), the efficiency of the engine becomes \( \frac{3}{16} \). The initial temperature of the sink is
If a gaseous mixture consists of 3 moles of oxygen and 4 moles of argon at an absolute temperature \( T \), then the total internal energy of the mixture is
(Neglect vibrational modes and \( R \) is the universal gas constant)
If two soap bubbles each of radius \(2 \, \text{cm}\) combine in vacuum under isothermal conditions, then the radius of the new bubble formed is
The escape velocity of a body from a planet of mass \(M\) and radius \(R\) is 14 km/s. The escape velocity of the body from another planet having same mass and diameter \(8R\) (in km/s) is
A rectangular slab consists of two cubes of copper and brass of equal sides having thermal conductivities in the ratio \(4 : 1\). If the free face of brass is at \(0^\circ \text{C}\) and that of copper is at \(100^\circ \text{C}\), then the temperature of their interface is
If the displacement of a particle executing simple harmonic motion is given by \( x = 0.5 \cos(125.6\,t) \), then the time period of oscillation of the particle is nearly (Here \(x\) is displacement in metre and \(t\) is time in second)
The stress-strain graph of two wires A and B is shown in the figure. If \(Y_A\) and \(Y_B\) are Young’s moduli of materials of wires A and B respectively, then
stress strain
The amplitude of a damped harmonic oscillator becomes 50% of its initial value in a time of 12 s. If the amplitude of the oscillator at a time of 36 s is \(x%\) of its initial amplitude, then the value of \(x\) is
The angular velocity of a body changes from \(6 \, \text{rad/s}\) to \(21 \, \text{rad/s}\) in a time of \(1.5 \, \text{s}\). If the moment of inertia of the body is \(100 \, \text{g m}^2\), then the rate of change of angular momentum of the body is
Two bodies of masses \( M \) and \( 4M \) initially at rest, start moving towards each other due to their mutual attraction. The velocity of their centre of mass when the first body attains a velocity \( v_0 \) is
A body falls freely on to a hard horizontal surface. If the coefficient of restitution between the surface and the body is \( 0.8 \), then the ratio of the maximum height to which the body rises after second impact and the initial height of the body is
If two bodies A and B are projected with same velocity but with different angles \( \theta_1 \) and \( \theta_2 \) respectively with the horizontal such that both will have same range, then the ratio of times of flight of the bodies A and B is
If a stone of mass \( 0.5~\text{kg} \) tied to one end of a wire is whirled in a circular path of radius \( 2~\text{m} \) with a speed \( 40~\text{rev/min} \) in a horizontal plane, then the tension in the wire is nearly
A body is projected vertically upwards with a velocity of \( 20~\text{ms}^{-1} \). If the potential energy of the body at a height of \( 5~\text{m} \) from the ground is \( 100~\text{J} \), then the kinetic energy of the body at a height of \( 10~\text{m} \) from the ground is
\textit{(Acceleration due to gravity \( g = 10~\text{ms}^{-2} \))}
The apparent weight of a girl of mass 30 kg when she is in a lift moving vertically upwards with an acceleration of \( 2~\text{ms}^{-2} \) is
(Acceleration due to gravity = \( 10~\text{ms}^{-2} \))