List of top Physics Questions asked in AP EAPCET

If the given graph shows the load (W) attached to and the elongation ($\Delta l$) produced in a wire of length 1 meter and cross-sectional area 1 mm$^2$, then the Young's modulus of the material of the wire is

The ratio of the efficiencies of two Carnot engines A and B is 1.25 and the temperature difference between the source and the sink is the same in both engines. The ratio of the absolute temperatures of the sources of the engines A and B is
The heat supplied to a gas at a constant pressure of $5 \times 10^5\, Pa$ is 1000 kJ. If the volume of gas changes from 1 m$^3$ to 2.5 m$^3$, then the change in internal energy of the gas is
When an ideal diatomic gas undergoes adiabatic expansion, if the increase in its volume is 0.5%, then the change in the pressure of the gas is
If the function $\sin^2 \omega t$ (where $t$ is time in seconds) represents a periodic motion, then the period of the motion is
Two smooth inclined planes A and B each of height 20 m have angles of inclination $30^\circ$ and $60^\circ$ respectively. If $t_1$ and $t_2$ are the times taken by two blocks to reach the bottom of the planes A and B from the top, then find the value of $t_1 - t_2$. (Acceleration due to gravity $g = 10\, m/s^2$)

On a smooth inclined plane, a block of mass $M$ is fixed to two rigid supports using two springs, each having spring constant $k$, as shown in the figure. If the masses of the springs are neglected, then the period of oscillation of the block is

The moment of inertia of a solid cylinder of mass 2.5 kg and radius 10 cm about its axis is
A body of mass 2 kg is moving towards north with a velocity of 20 m/s and another body of mass 3 kg is moving towards east with a velocity of 10 m/s. The magnitude of the velocity of the centre of mass of the system of the two bodies is
The acceleration due to gravity at a height of $(\sqrt{2} - 1)R$ from the surface of the earth is (where $g = 10\, m/s^2$ and $R$ is the radius of the earth)
The number of significant figures in 0.03240 is
If the breaking strength of a rope is $\frac{4}{3}$ times the weight of a person, then the maximum acceleration with which the person can safely climb up the rope is (g - acceleration due to gravity)
If a position dependent force $(3x^2 - 2x + 7)N$ acting on a body of mass 2 kg displaces it from $x = 0\, m$ to $x = 5\, m$, then the work done by the force is
A ball projected vertically upwards with velocity 'v' passes through a point P in its upward journey in a time of 'x' seconds. Then, the time in which the ball again passes through the same point P is
Three vectors each of magnitude $3\sqrt{1.5}$ units are acting at a point. If the angle between any two vectors is $\frac{\pi}{3}$, then the magnitude of the resultant vector of the three vectors is
A vector perpendicular to the vector $\left(4\hat{i} - 3\hat{j}\right)$ is
A block of mass 2 kg is placed on a rough horizontal surface. If a horizontal force of 20 N acting on the block produces an acceleration of 7 m/s$^2$ in it, then the coefficient of kinetic friction between the block and the surface is (Acceleration due to gravity = 10 m/s$^2$)
If in an amplitude modulated wave, the maximum amplitude is 14 V and the modulation index is 0.4, then the amplitude of the carrier wave is
A cc camera is fabricated using a semiconducting material having a band gap of 3 eV. The wavelength of light it can detect is nearly
A transistor has 3 impurity regions of different doping levels. In the order of increasing doping level, the regions are
If the time taken for a radioactive substance to decay 8% to 77% is 12 minutes, then the half life of the substance in minutes is
The difference between the frequencies of second and first Paschen lines of hydrogen atom is
(\( R \) - Rydberg constant and \( c \) - speed of light in vacuum)

An alpha particle moves along a circular path of radius 0.5 mm in a magnetic field of \( 2 \times 10^{-2} \, \text{T} \). The de Broglie wavelength associated with the alpha particle is nearly 
(Planck’s constant \( h = 6.63 \times 10^{-34} \, \text{Js} \))

The magnitude of the electric field of a plane electromagnetic wave travelling in free space is \( E \). If \( \mu_0 \) and \( \varepsilon_0 \) are respectively permeability and permittivity of the free space, then the magnitude of magnetic field of the wave is
For better tuning of a series LCR circuit in a communication system, the preferred combination is