List of top Physics Questions asked in AP EAPCET

The layer of the atmosphere that reflects low frequency (LF) electromagnetic waves during daytime only is
If four moles of hydrogen and two moles of helium form a gaseous mixture, then the molar specific heat capacity of the mixture at constant pressure is
A body A of mass 200 g moving with a velocity \(\vec{v}_1 \hat{i}\) makes collision with another body B of mass 100 g moving with a velocity \(\vec{v}_2 \hat{i}\). After collision, A and B move with velocities \(\vec{v}_3 \hat{i}\) and \(\vec{v}_4 \hat{i}\) respectively. If \(v_3 = 0.5v_1\), then the value of \(v_1\) is
If the de Broglie wavelength of an electron is \( 2 \, \text{nm} \), then its kinetic energy is nearly (Planck's constant \( = 6.6 \times 10^{-34} \, \text{J s} \) and mass of electron \( = 9 \times 10^{-31} \, \text{kg} \))
For better tuning of a series LCR circuit in a communication system, the preferred combination is
The ratio of the radius of a uniform circular disc and its radius of gyration about a tangent in its plane is
Of the following, the pair of physical quantities not having the same dimensional formula is:
A thin circular ring and a circular disc of equal mass are rolling without sliding. If their linear velocities are equal and the total kinetic energy of the disc is 6 J, then the total kinetic energy of the ring is:
When a wire made of material with Young's modulus Y is subjected to a stress S, the elastic potential energy per unit volume stored in the wire is
The readings of the voltmeter and ammeter in the circuit shown in the diagram are respectively
readings of the voltmeter and ammeter
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
Four moles of a diatomic gas at a temperature of 927 $^\circ$C expands adiabatically such that its volume increases by 3100%. The work done by the gas is (Universal gas constant = 8.3 J mol$^{-1}$ K$^{-1}$)

A short bar magnet has a magnetic moment of \(0.48 \, J {T}^{-1}\). The magnitude of magnetic field at a point at 10 cm distance from the centre of the magnet on its axis is

In a wire of radius 1 mm, a steady current of 2 A uniformly distributed across the cross-section of the wire is flowing. Then the magnetic field at a point 0.25 mm from the centre of the wire is
The average translational kinetic energy of oxygen molecules at a temperature of $127^\circ\text{C$ is (Boltzmann constant $= 1.38 \times 10^{-23}~\text{J/K}$)}
The device used for voltage regulation is
If the surface areas of two nuclei are in the ratio 9 : 49, then the ratio of their mass numbers is
According to Rayleigh, when sunlight travels through atmosphere, the amount of scattering is proportional to $n^{th}$ power of wavelength of light. Then the value of $n$ is
A body starts from rest and accelerates uniformly at 2 m/s\(^2\). What is the distance covered in 5 seconds?
A thin circular ring and a circular disc of equal mass are rolling without sliding. If their linear velocities are equal and the total kinetic energy of the disc is 6 J, then the total kinetic energy of the ring is:

A part of a circuit is shown in the figure. The ratio of the potential differences between the points A and C, and the points D and E is.

 

The magnetic moment of an electron moving in a circular orbit of radius R with a time period T is
A block of mass 2 kg is kept on a rough horizontal surface. If a horizontal force of 4 N is applied on the block, then the acceleration of the block is (Coefficient of static friction between the block and the surface is 0.3)
The force between two conducting spheres of same radius having charges +8 μC and -4 μC separated by some distance in air is F. If the spheres are connected by a conducting wire and after some time the wire is removed, then the magnitude of the force between the two conducting spheres is
At constant pressure, if the work done by a gas is 40% of the increase in the internal energy of the gas, then the specific heat capacity of the gas at constant volume is
(Universal gas constant \(R = 8.3 \, \text{J mol}^{-1} \text{K}^{-1}\))