List of top Physics Questions asked in AP EAPCET

If the least distance of distinct vision for a boy is \( 35 \, \text{cm} \), then the lens to be used by the boy for correcting the defect of his eye is
If two progressive sound waves represented by \( y_1 = 3 \sin 250 \pi t \) and \( y_2 = 2 \sin 260 \pi t \) (where displacement is in metre and time is in second) superimpose, then the time interval between two successive maximum intensities is
If the internal energy of 3 moles of a gas at a temperature of 27 °C is 2250R, then the number of degrees of freedom of the gas is (R - Universal gas constant)
The work done by 6 moles of helium gas when its temperature increases by \( 20^\circ \text{C} \) at constant pressure is (Universal gas constant = \( 8.31 \, \text{J mol}^{-1} \, \text{K}^{-1} \))
A small quantity of water of mass 'm' at temperature \( \theta^\circ \text{C} \) is mixed with a large mass 'M' of ice which is at its melting point. If 's' is the specific heat capacity of water and 'L' is the latent heat of fusion of ice, then the mass of ice melted is
If two soap bubbles A and B of radii \(r_1\) and \(r_2\) respectively are kept in vaccum at constant temperature, then the ratio of masses of air inside the bubbles A and B is
If the longitudinal strain of a stretched wire is 0.2% and the Poisson's ratio of the material of the wire is 0.3, then the volume strain of the wire is
An artificial satellite is revolving around a planet of radius \( R \) in a circular orbit of radius \( a \). If the time period of revolution of the satellite, \( T \propto a^{3/2}g^xR^y \), then the values of \( x \) and \( y \) are respectively:
A spring is stretched by \( 0.2 \, \text{m} \) when a mass of \( 0.5 \, \text{kg} \) is suspended to it. The time period of the spring when \( 0.5 \, \text{kg} \) mass is replaced with a mass of \( 0.25 \, \text{kg} \) is (Acceleration due to gravity \( = 10 \, \text{m/s}^2 \))

The coordinates of the centre of mass of a uniform L-shaped plate of mass 3 kg shown in the figure is:

 

A circular well of diameter \( 2 \, \text{m} \) has water up to the ground level. If the bottom of the well is at a depth of \( 14 \, \text{m} \), the time taken in seconds to empty the well using a \( 1.4 \, \text{kW} \) motor is (Acceleration due to gravity = \( 10 \, \text{m/s}^2 \))
If a force of \( (6x^2 - 4x) \, \text{N} \) acts on a body of mass 10 kg, then the work to be done by the force in displacing the body from \( x = 2 \, \text{m} \) to \( x = 4 \, \text{m} \) is
Two blocks A and B of masses 2 kg and 4 kg respectively are kept on a rough horizontal surface. If same force of 20 N is applied on each block, then the ratio of the accelerations of the blocks A and B is (Coefficient of kinetic friction between the surface and the blocks is 0.3 and acceleration due to gravity = \(10 \operatorname{ms}^{-2}\))
Water flowing through a pipe of area of cross-section \( 2 \times 10^{-3} \, \text{m}^2 \) hits a vertical wall horizontally with a velocity of \( 12 \, \text{m/s} \). If the water does not rebound after hitting the wall, then the force acting on the wall due to water is
A particle moving along a straight line covers the first half of the distance with a speed of \( 3 \, \text{m/s} \), the other half of the distance is covered in two equal time intervals with speeds of \( 4.5 \, \text{m/s} \) and \( 7.5 \, \text{m/s} \) respectively, then the average speed of the particle during the motion is
If a stone thrown vertically upwards from a bridge with an initial velocity of \(5 \operatorname{ms}^{-1}\), strikes the water below the bridge in a time of 3 s, then the height of the bridge above the water surface is (Acceleration due to gravity = \(10 \operatorname{ms}^{-2}\))
If the equation for the velocity of a particle at time 't' is \(v = at + \frac{b}{t+c}\), then the dimensions of a, b, c are respectively
One of the two identical capacitors having the same capacitance C, is charged to a potential \(V_1\) and the other is charged to a potential \(V_2\). If they are connected with their like plates together, then the decrease in the electrostatic potential energy of the combined system is
In Young's double-slit experiment, if the distance between the slits is increased to 3 times its initial distance, then the ratio of initial and final fringe widths is.
In a Carnot engine, if the absolute temperature of the source is \( 25% \) more than the absolute temperature of the sink, then the efficiency of the engine is
If a heat engine and a refrigerator are working between the same two temperatures \(T_1\) and \(T_2\) (\(T_1>T_2\)), then the ratio of efficiency of heat engine to coefficient of performance of refrigerator is
A force \( F \) is applied on a body of mass \( m \) so that the body starts moving from rest. The power delivered by the force at time \( t \) is proportional to:
The equations for the displacements of two particles in simple harmonic motion are \( y_1 = 0.1\sin\left(100\pi t + \frac{\pi}{3}\right) \) and \( y_2 = 0.1\cos(\pi t) \) respectively. The phase difference between the velocities of the two particles at a time \( t = 0 \) is
A short bar magnet is placed in a uniform magnetic field of $2~\text{T}$ such that the axis of the magnet makes an angle of $45^\circ$ with the field. If the torque acting is $0.36~\text{Nm}$, the magnetic moment of the magnet is
A horizontal telegraph wire of length $30~\text{m}$ fell from a height of $20~\text{m}$. If resistance is $40~\Omega$ and horizontal component of Earth’s magnetic field is $2 \times 10^{-5}~\text{T}$, the induced current is