List of top Physics Questions asked in AP EAPCET

A 10 \(\Omega\) resistor takes a current of 5 A. The thermal energy developed in 40 s is:
A current of 5 A exists in a square loop of side length 5 cm. The magnitude of the magnetic field at the centre of the square loop is approximately:
Two long and parallel straight wires A and B carrying current 5 A each in the same direction. If the force on a 5 cm section of wire B is \(5 \times 10^{-6}\, \text{N}\), then the separation between the two wires is (Given \( \mu_0 = 4\pi \times 10^{-7} \, \text{SI} \)).
A circular loop of area \(0.04 \, m^2\) is rotating in a uniform magnetic field of \(0.4 \, T\). The loop rotates about its diameter which is perpendicular to the magnetic field. The magnetic flux through the loop when the plane of the coil is normal to the field and when it is making \(30^\circ\) with the field are respectively (in Wb).

Consider the following statements:
Statement A: Magnetic monopoles do not exist and therefore magnetic field lines form closed loops.
Statement B: A bar magnet makes an angle of \(30^\circ\) with a uniform magnetic field. If the maximum torque experienced by the magnet is \(3.464 \times 10^{-5}\,\text{Nm}\), the potential energy of the system is \(3 \times 10^{-5}\,\text{J}\).
Statement C: A superconductor is a perfect ferromagnetic material.
To produce dispersion without deviation, a thin prism of angle \(15^\circ\) made of glass (refractive index 1.45) is combined with another prism made of glass of refractive index 1.75. The prisms are arranged such that refracting angles are in opposite direction. Find the angle of second prism.
Three charges 1 C, 2 C and 3 C are placed at points (1, 0, 0), (0, 2, 0) and (0, 0, 3) respectively. The distances are measured in metre along the three axes. The magnitude of the electric field at the origin is:
In Young’s double slit experiment, the ratio of intensities of dark and bright fringes is 16:36. The ratio of amplitudes of the two light waves is:
The work done in assembling three charged particles A, B and C of charges \(2 \times 10^{-5} C\), \(3 \times 10^{-5} C\) and \(4 \times 10^{-5} C\) respectively at the vertices of an equilateral triangle of side 10 cm is \([ \frac{1}{4\pi\varepsilon_0} = 9 \times 10^9 ]\).
Current density in a cylindrical wire of radius \(R\) varies with radial distance as \(\beta (r + r_0)^2\). The current through the section of the wire shown in the figure is (β is a constant).

A rectangular coil of length 2 cm and width 1.25 cm with 250 turns carries a current of 55 μA and is subjected to a magnetic field of strength 0.64 T. Work done in rotating the coil by 180° against the torque is:
If the volume of a gas is reduced to half then the change in its mean free path is
A steel rod of length 5 m and radius 2 cm is kept at room temperature and heated to 10°C above room temperature. The change in the cross-sectional area of the rod is (coefficient of linear expansion = \(10 \times 10^{-6} \, ^\circ\text{C}^{-1}\)).
The equation for a wave travelling in x-direction along a string is \( y = (7\,\text{cm}) \sin[(\pi\, \text{cm}^{-1})x - (100\, \text{s}^{-1})t] \). The maximum velocity of a particle of the string is:
A Carnot engine is working between a source at constant temperature \(T_1\) and a sink at temperature \(T_2\). Its efficiency is \(\frac{1}{8}\). Upon decreasing the temperature of the sink by 50°C, the efficiency becomes \(\frac{1}{4}\). Find \(T_1\) and \(T_2\).
A Carnot engine operating between 430 K and 330 K does a work of 60 kJ. The amount of ice that can melt from its exhaust is (Latent heat of fusion of ice = 330 J g\(^{-1}\)).
A satellite is revolving in a circular orbit around the earth with a speed of 8.4 km s\(^{-1}\) at a height where the acceleration due to gravity is 8.4 m s\(^{-2}\). The height of the satellite from the Earth's surface is (Radius of Earth = 6400 km)
A music system playing loud music is kept on a table. If a glass of water is kept on the same table, the glass vibrates and generates ripples in the water. This is due to a property known as
A metal cube has edge length 0.1 m. The bulk modulus of the metal is \(1.4 \times 10^{11} \, \text{N/m}^2\). When subjected to hydraulic pressure, the volume contraction of the cube is \(5 \times 10^{-2} \, \text{cm}^3\). The applied pressure is
An object hangs from a spring balance. The balance shows 40 N when the object is in air, 30 N when the object is immersed in water, and 34 N when the object is immersed in another liquid. If the density of water is 1000 kg m\(^{-3}\), then the density of the liquid is
A mass is attached to a vertically suspended spring and released. If it falls through 100 cm and comes back to initial position executing simple harmonic motion, then its time period is (Take \(g = 10 \, \text{m/s}^2\)).
A hot air balloon is descending with a constant acceleration of \(2 \, \text{m/s}^2\). The mass of the balloon and its contents is 600 kg. Assuming the volume of the balloon is kept constant so that the buoyant force remains the same, the mass of the balloon should be changed so that it starts ascending with the same acceleration. (Take \(g = 10 \, \text{m/s}^2\)).
Point masses 2 kg, 3 kg, 4 kg and 5 kg are lying at the points (-1,-1,0), (3,0,0), (0,0,1) and (0,4,0) respectively. The moment of inertia of this system about y-axis will be in kg m\(^{2}\).
A solid circular disc of mass 100 kg rolls along a horizontal floor so that center of mass has a speed of 0.2 m s\(^{-1}\). The absolute value of work done on the disc to stop it is.
A ball of mass 1 kg is thrown from the top of a tower at \(t = 0\) with an initial velocity \(\vec{v} = [10\hat{i} + 20\hat{j}] \, \text{m/s}\). The change in potential energy of the ball between \(t = 0\) and \(t = 5 \, \text{s}\), while it is freely falling, is (Take \(g = 10 \, \text{m/s}^2\)).