List of top Physics Questions asked in AP EAPCET

If each of the resistances in the circuit is 10 \(\Omega\), the resistance between terminals A and B is:

A circular loop of area \(5~\text{mm}^2\) is placed coaxially inside a long solenoid that has 1000 turns/cm and carries a sinusoidally varying current of amplitude 1 A and angular frequency \(\omega\). If the amplitude of the emf induced in the loop is \(4.4 \times 10^{-4}~\text{V}\), then the value of \(\omega\) is:

Currents flowing through two conductors of equal resistance produce 9 times more heat in the first conductor compared to the second one. The ratio of currents flowing through the first and second conductors is:

Relative permeability of diamagnetic, paramagnetic and ferromagnetic materials are denoted by \(\mu_r^{DM}, \mu_r^{PM}\) and \(\mu_r^{FM}\) respectively. Then:

The magnetic field at a point inside a long current-carrying solenoid compared to the magnetic field at the axial end point is:

Consider the following statements:
Statement (A): The restoring couple in the moving coil galvanometer is due to the current in the coil.
Statement (B): Wires of magnetic field around a current carrying straight conductor will be circular in a plane parallel to the conductor.
Statement (C): When a charged particle enters a uniform magnetic field, its kinetic energy increases.

A point on a taut string is moving up and down due to a wave travelling along it. The point completes 120 cycles in one fourth of a minute. The frequency of the wave is:

A small ball of mass 5 g is suspended by a string of length 20 cm in a horizontal uniform electric field of \(1 \times 10^3~\text{N/C}\). If the ball is in equilibrium when the string makes an angle 60° with the vertical, then the net charge on the ball is:
[Acceleration due to gravity = 10 m/s\(^2\)]

A concave lens of focal length \(f\) produces an image \(\frac{1}{x}\) times the size of an object. The distance of the image from the lens is:

The electric potential at points along x-direction is given by \(V = (1.0~\text{V/m}^2) x^2\). The electric field at point \(x = 5.0~\text{m}\) on x-axis is:

Two charges \(q_1 = 4 \times 10^{-6}~\text{C}\) and \(q_2 = -2 \times 10^{-6}~\text{C}\) are separated by 8 cm. The distance of the point from \(q_1\) on the line joining the charges where the potential vanishes is:
(Potential at infinity is assumed to be zero)

A car is approaching a factory siren that has a frequency of 510 Hz. The speed of sound in air is 340 m/s. If the apparent frequency of the sound as heard by the car driver is 600 Hz, then the speed of the car is:

If we consider a rectangular sheet of the solid, the coefficient of areal expansion is:

A flask of volume 0.1 m\(^3\) contains He (monatomic) and O\(_2\) (diatomic) gases in the ratio 4:1. The flask is maintained at a temperature 27 °C. The ratio of the rms speeds of the He-atoms and O\(_2\)-molecules is:
(Atomic mass of He = 4 amu, and O\(_2\) = 32 amu)

A container is filled to a height of 20 cm with water. A 30 cm thick layer of oil with specific gravity 0.8 floats on the top of water. If the density of water is 1000 kg/m\(^3\) and atmospheric pressure is \(1 \times 10^5\) Pa, then the total pressure at the bottom of the container is:
[Acceleration due to gravity = 10 m/s\(^2\)]

A gas in a closed container undergoes the cycle ABCDA as shown in the figure. The net heat absorbed by the gas after it has completed 20 cycles is:

A Carnot engine operates between heat reservoirs differing in temperature by 80 °C. The efficiency of the Carnot engine is \(20\%\). The temperature of the cold reservoir is:

Assume a planet with orbiting radius R and period of revolution T around the sun experiences a gravitational force which follows inverse cube law instead of inverse square law. In this case, the period of revolution is proportional to:

A wheel rotates with an angular velocity of 420 revolutions/minute when power of 660 W is transferred to it. The torque acting on the wheel is:

A block is executing simple harmonic motion and its position is given by \(x = A \cos(\omega t + \phi)\). At time \(t = 0\), the ratio of the kinetic energy to the potential energy is \(\frac{1}{3}\). The magnitude of the phase angle \(\phi\) is:

If \(y = \frac{3}{\sqrt{2}}\left(\sin \frac{\pi}{4}t + \cos \frac{\pi}{4}t\right)\) cm represents simple harmonic motion, the time period of the motion is:

A piece of metal having a square cross section of area 400 mm\(^2\) is pulled with 40 kN force, producing only elastic deformation. If the Young's modulus of the metal is \(40 \times 10^9~\text{N/m}^2\), then the strain is:

The ball initially has a velocity of 5 m/s in the positive x-direction and some time later has a velocity of 7 m/s in the positive y-direction. If the work done by the ball is 48 joule, then the mass of the ball in kg is:

A projectile needs to be launched such that its maximum height should not be more than 20 m. If the maximum initial velocity of the projectile is 40 m/s, then the horizontal range is nearly
[Acceleration due to gravity = 10 m/s\(^2\)]

A circular race track of radius 240 m is banked at an angle of 45°. If the coefficient of friction between the wheels of a race car and the road is 0.2, the maximum permissible speed to avoid slipping is:
[Acceleration due to gravity = 10 m/s\(^2\)]