List of top Physics Questions asked in AP EAPCET

Electromagnetic waves of energy flux $ 75 \times 10^4 \, \text{W/m}^2 $ incidents normally on a surface of area $ 40 \, \text{cm}^2 $. If the surface absorbs the flux completely, the total momentum delivered to the surface in one second is: Options:
The de Broglie wavelength of a charged particle accelerated through a potential difference $ V $ is $ \lambda $. If the potential difference is increased by 21%, the de Broglie wavelength of the charged particle is:
An AC voltage of $ 10 \sin \omega t $ volt is applied to a pure inductor of inductance $ 10 \, \text{H} $. The current through the inductor in ampere is:
The shiny metal disk in the electric power meter (analog type) rotates due to:

Two charges +q and -q, each 1 $\mu$C are arranged as shown in the figure. If x = 2 cm and y = 3 cm then potential difference ($V_A - V_B$) is

The radius of the path of an electron moving at a speed of $ 3.2 \times 10^7 $ ms$ ^{-1} $ in a magnetic field of $ 6 \times 10^{-4} $ T perpendicular to it is (mass of electron is $ 9 \times 10^{-31} $ kg and charge of electron is $ 1.6 \times 10^{-19} $ C)
The magnetic field lines of a bar magnet

In the circuit, $ E_1 = E_2 = E_3 = 2 \, \text{V} $ and $ R_1 = R_2 = 4 \, \Omega $. Then the current flowing through $ E_2 $ is:

Among the following, Ampere’s circuital law is represented by:

Switch $ S $ is closed. Now the switch is opened and the free space between the plates of the capacitors is filled with a dielectric of dielectric constant 3. The ratio of total electrostatic energy stored in the capacitors before and after the introduction of the dielectric is:

The resultant resistance between $ A $ and $ B $ in the given figure is:

With respect to air, the critical angle in a medium for red light of wave length $ \lambda_1 $ is $ \theta $. Other facts remaining same, the critical angle for yellow light of wave length $ \lambda_2 $ will be Options:
During the propagation of a longitudinal wave, in the region of compressions and rarefactions, Options:
A gas of mass 'm' and molecular weight 'M' is flowing in an insulated tube with a velocity '2V'. If the flow of the gas is suddenly stopped and all the kinetic energy is utilized to compress the gas, the increase in the temperature of the gas is ($\gamma$ is ratio of specific heats, R is universal gas constant)

In the given pressure ($ P $) - absolute temperature ($ T $) graph of an ideal gas, the relation between volumes $ V_1, V_2, V_3, $ and $ V_4 $ is:

Adiabatic bulk modulus of a gas at a pressure $ P $ is ($ \gamma $-ratio of specific heat capacity of the gas): Options:
The temperature of the earth without the greenhouse effect will be: Options:
The change in internal energy when 20 g of a gas is heated from $ 25^\circ C $ to $ 35^\circ C $ at constant volume is: Options:
A metal wire with circular cross section and length one metre is pulled with tensile force of 1000 N on each side. For the wire to be stretched not more than 0.25 cm, the minimum diameter of the wire required is:
(Young's modulus of the metal $= 10^{11}$ \text{ Pa, take } $\sqrt{\pi} = 1.77$)
The gravitational potential energy of a system of three masses $ m $, $ 2m $, and $ 3m $ placed at the three vertices of an equilateral triangle of side $ a $ is Options:
A toy of mass 20 g at rest acquires a velocity $ (3\hat{i} - 2\hat{j}) $ ms$ ^{-1} $ in 2 seconds. Then the power of the toy is
A ball is dropped from some height and after first collision with the ground if it reaches $ \frac{3}{4} $th of its original height, then the % loss of its energy is: Options:
A body of mass 2 kg is on an inclined plane of inclination 30° and coefficient of friction is $ \frac{1}{\sqrt{3}} $. The minimum force required to move the body up the inclined plane is: \[ \text{(Acceleration due to gravity = 10 ms}^{-2}\text{)} \] Options:
A pendulum of time period one second is losing its mechanical energy due to damping. Its mechanical energy at time $ t = 0 $ is 45 J. After completing 15 oscillations, its mechanical energy is 15 J. The ratio of the damping constant and the mass of the object making damped oscillations is:
A solid sphere and a solid cylinder roll down without slipping along an inclined plane. If they start from rest from the top of the inclined plane, the ratio of the velocities of the solid sphere and solid cylinder when they reach the bottom of the inclined plane is: