List of top Physics Questions asked in AP EAPCET

Two coherent sources \(O_1\) and \(O_2\) in Young's double slit experiment are illuminated with monochromatic light of wavelength \(5000\ \text{\AA}\). If a second order dark fringe is formed at a point \(R\) on the screen, the path difference \[ O_1R \sim O_2R \] is

Let \(V_1\) be the potential at the center of the square of side \(1\text{ m}\) when the charges at the \(4\) corners are \(2\text{ C}\) each. If the same charges are placed at the corners of a square of side \(2\text{ m}\), then the potential at the center of this square is \(V_2\). The value of \(\frac{V_2}{V_1}\) is

A concave lens and a convex lens are arranged as shown in the figure. The position of the final image is:

A vessel containing nitrogen gas is supplied a heat of \(498\text{ J}\), so as to raise the temperature of the gas by \(40^\circ\text{C}\) at constant pressure. The mass of nitrogen gas in the vessel is
\[ \text{(Molecular mass of nitrogen }=28\text{ g; Universal gas constant }=8.3\text{ J mol}^{-1}\text{K}^{-1}\text{)} \]

A string of length \(1\text{ m}\) and mass \(490\text{ g}\) is put under a tension of \(25\text{ N}\). A wave of frequency \(120\text{ Hz}\) is sent along it. The speed of this wave is

Assertion (A): When a uniform metallic rod rotating about perpendicular bisector with constant angular speed is heated uniformly to raise its temperature slightly, its speed of rotation increases.
Reason (R): When a metal rod is heated uniformly to raise its temperature slightly, its moment of inertia increases.

A gas in a closed container undergoes the cycle \(ABCA\) as shown in the figure. The net heat released by the gas after it has undergone \(20\) cycles is

A point mass oscillates along x-axis according to \[ x=x_0\sin\left(\omega t-\frac{\pi}{6}\right) \] If the acceleration of the point mass is written as \[ a=A\sin(\omega t+\delta), \] then

Consider two liquids \(A\) and \(B\) in a U-shaped tube in static equilibrium as shown in the figure. If the density of the liquid \(A\) is twice the density of liquid \(B\), then the relation between \(h_A\) and \(h_B\) is

The orbital period of a geostationary satellite is

A particle executes simple harmonic motion with a time period \(0.6\text{ s}\) and amplitude \(10\text{ cm}\). Then the mean velocity of the particle over the time interval during which it travels a distance \(5\text{ cm}\) starting from the equilibrium position is

A point mass of \(400\ \text{g}\) executes S.H.M. under a force \[ F=-(10\ \text{Nm}^{-1})x \] If it crosses the centre of oscillation with a speed of \(10\ \text{ms}^{-1}\), the amplitude of motion is:

The elastic limit of a metal is \[ \frac{400}{\pi}\text{ MPa}. \] If a rod of this metal is to support a \(484\text{ N}\) load without exceeding its elastic limit, the minimum diameter of the rod is

A cylindrical metal box whose flat surface has an area of \(0.01\text{ m}^2\) rests on liquid of \(0.3\text{ mm}\) thickness. If upon applying a horizontal force of magnitude \(\frac{1}{3}\text{ N}\), the box slides with a constant speed of \(0.09\text{ m s}^{-1}\), the coefficient of viscosity of the liquid is nearly

Two position vectors are given by \[ \vec{r}_1=(1,1,1) \] and \[ \vec{r}_2=(1,-1,1) \] The unit vector in the direction of \[ \vec{r}_1\times \vec{r}_2 \] is

A body of mass \(0.6\text{ kg}\) is moving along a circular path of radius \(1\text{ m}\). If the body moves with \[ \frac{900}{\pi} \] revolutions per minute, its kinetic energy is

A fan is rotating with an angular speed \(300\ \text{rpm}\). The fan is switched off, and it takes \(80\ \text{s}\) to come to rest. Assuming constant angular deceleration, the number of revolutions made by the fan before it comes to rest is:

A force of \(10\text{ N}\) acting at an angle on a particle produces a displacement of \[ (3\hat{i}-4\hat{j})\text{ m} \] due to this force. If the kinetic energy of the particle is decreased by \(25\text{ J}\), then the angle between the force and the displacement is

The coefficient of friction between object and substance, if we need to move an object of weight \(150\ \text{N}\) on a horizontal surface with a force of \(75\ \text{N}\), is

The coefficient of static friction between the road and tyres of a car is \(0.4\). The maximum permissible speed of the car is \(10\text{ ms}^{-1}\) on a curved unbanked road. Then the maximum radius of curvature of the road is
\[ \text{(acceleration due to gravity }=10\text{ ms}^{-2}\text{)} \]

Which of the following is the fundamental force in nature?

A particle moves along a straight line along the \(x\)-axis. Its position \((x)\) versus time \((t)\) graph is shown in the figure \([x \text{ in meters and } t \text{ in seconds}]\). Its average speed during the motion is:

In a sports competition, a javelin is thrown at an angle \(45^\circ\), which recorded a range of \(90\text{ m}\). The maximum height reached by the javelin is
\[ \text{(Neglect air resistance and acceleration due to gravity }=10\text{ ms}^{-2}\text{)} \]

The equation for the trajectory of a projectile is \[ y=\left(\frac{x}{\sqrt{3}}-\frac{x^2}{60}\right)\text{ m} \] The velocity of projection of the projectile is
\[ (\text{Acceleration due to gravity }=10\ \text{ms}^{-2}) \]

The ratio of radii of \(3^{rd}\) and \(6^{th}\) Bohr's orbit in a hydrogen atom is