List of top Questions asked in AP EAPCET- 2022

A nucleus has mass number \(A_1\) and volume \(V_1\). Another nucleus has mass number \(A_2\) and volume \(V_2\). If the relation between the mass numbers is \(A_2 = 3 A_1\), find \(\frac{V_1}{V_2}\).

In a CE transistor amplifier, the signal voltage across the collector resistance is 2.5 V. The input signal voltage is 0.02 V. If the base and collector resistances are 1.5 k\(\Omega\) and 2.5 k\(\Omega\), find the current amplification factor.

As the quantum number increases, the difference in energy between consecutive energy levels:

The sum of electrons present in all subshells of an atom with \(m_s\) value of \(+\frac{1}{2}\) for \(n=4\) and \(m_s\) value of \(-\frac{1}{2}\) for \(n=3\) is

If the amplitude of the magnetic field in a travelling plane electromagnetic wave is \(2.2 \times 10^{-4} \, \text{T}\), then the intensity of the wave is nearly:

Two light waves of wavelengths 600 nm and 200 nm are incident on a metal surface. The maximum velocity of photoelectrons produced due to one wavelength is \(\frac{1}{3}\) of the maximum velocity of the photoelectrons produced due to the other wavelength. Find the work function of the metal.

Capacitive reactance of a capacitor in an AC circuit is 6 k\(\Omega\). If the same capacitor is connected to an AC source of double the frequency, find the new capacitive reactance.

In a plane electromagnetic wave, the maximum value of the electric field component is \(4.4 \, \text{V/m}\). Find the intensity of the wave.

A monochromatic light is incident on a single slit of width 0.014 mm. The angular position of the second bright line observed is \(2.81^\circ\). Find the wavelength of the incident light. \([ \sin(2.81^\circ) = 0.049072 ]\)

A circular coil of area 0.01 m\(^2\) and 40 turns is rotated about its vertical diameter with an angular speed of 50 rad/s in a uniform horizontal magnetic field 0.05 T. If the average power loss due to Joule heating is 25 mW, find the closed loop resistance of the coil.

In the figure, find the value of \(Q\) so that the electrostatic potential energy of the system becomes zero.

A bar magnet of length 16 cm is placed in the magnetic meridian with the N-pole pointing towards geographical north. Two neutral points separated by 12 cm are obtained on the equatorial line of the magnet. If the horizontal component of Earth's magnetic field is \(3.2 \times 10^{-5} \, \text{T}\), find the pole strength of the magnet.

The power consumed when 10 V voltage is applied to a series combination of 10 resistors of each 1 \(\Omega\) is \(P_s\), and the power consumed when the same 10 V is applied to the parallel combination of these 10 resistors is \(P_p\). Find the value of \(\frac{P_s}{P_p}\).

A closely wound solenoid of length 1 m has 5 layers of 500 turns each. If the magnitude of the magnetic field inside the solenoid near its centre is 4.4 mT, find the current carried.

Two long wires carrying currents \(8 \, \text{A}\) along x-axis and \(6 \, \text{A}\) along y-axis. Find the magnetic field at the point \((2\hat{i} + 4\hat{j})\). (Take \(\mu_0 = 4 \pi \times 10^{-7} \, \text{SI unit})\).

Assertion [A]: For light diverging from a point source, the intensity at the wavefront does not depend on the distance.
Reason [R]: In a diverging beam of light from a point source, spherical wavefront is observed.

Two lenses of powers \(-1.75 \, \text{D}\) and \(+2.25 \, \text{D}\) are placed in contact. Find the focal length of the combination.

A large charged plane having surface charge density \(4.9 \times 10^{-6} \, \text{C/m}^2\) lies in the x-y plane. A circular plane of radius 1 cm is lying completely in the region where x, y, and z coordinates are all positive. When the plane’s normal makes an angle \(60^\circ\) with the z-axis, find the electric flux through the circular plane. \(\left(\frac{1}{4 \pi \epsilon_0} = 9 \times 10^9 \, \text{Nm}^2/\text{C}^2\right)\)

An open air pipe of length 80 cm has the second harmonic frequency equal to the fundamental frequency of a closed organ pipe. Find the length of the closed pipe.

A parallel plate capacitor with air between the plates has capacitance \(12 \, \mu \text{F}\). If the distance between the plates is doubled and the space between the plates filled with a dielectric constant 4, find the capacitance of the capacitor.

Two boxes are at the same temperature. The first box contains gas with molecular mass \(m_1\) and rms speed \(v_1\). The second box contains gas with molecular mass \(m_2\) and average speed \(v_2\). If \(v_1 = 1.5 v_2\), find \(\frac{m_1}{m_2}\).

A body of volume \(V\) floats on water with \(\frac{1}{3}\) of its volume above the surface. Find the volume of the object above the surface when floating on a liquid of specific gravity 1.5.

The surface tension and vapour pressure of a liquid at 25 °C are \(8 \times 10^{-2} \, \text{N/m}\) and \(2.5 \times 10^3 \, \text{Pa}\) respectively. Find the radius of the smallest spherical water droplet which can form without evaporating at 25 °C.

Temperature of a cold reservoir of a Carnot engine is 127 °C. If the efficiency of the Carnot engine is 20%, find the temperature of the hot reservoir.

A gas in a closed container undergoes the cycle ABCA as shown in the figure. Find the net heat absorbed by the gas after it has completed 10 cycles.