List of top Physics Questions asked in AP EAMCET

The gravitational potential energy of a body on the surface of the Earth is $E$. If the body is taken from the surface of the Earth to a height equal to $150%$ of the radius of the Earth, its gravitational potential energy is:

The focal length of a thin converging lens in air is 20 cm. When the lens is immersed in a liquid, it behaves like a concave lens of power 1 D. If the refractive index of the material of the lens is 1.5, the refractive index of the liquid is

An inductor and a resistor are connected in series to an AC source of voltage $ 144\sin(100\pi t + \frac{\pi}{2}) $ volts. If the current in the circuit is $ 6\sin(100\pi t + \frac{\pi}{2}) $ amperes, then the resistance of the resistor is:

A wheel of angular speed 600 rev/min is made to slow down at a rate of $ 2 $ rad/s$^2$. The number of revolutions made by the wheel before coming to rest is

A straight wire of resistance $R$ is bent in the shape of a square. A cell of emf 12 V is connected between two adjacent corners of the square. The potential difference across any diagonal of the square is:

An object of mass 'm' is projected with an initial velocity 'u' with an angle of '$\theta$' with the horizontal. The average power delivered by gravity in reaching the highest point is

Two objects having masses in $1:4$ ratio are at rest. When both of them are subjected to the same force separately, they achieved the same kinetic energy during times $t_1$ and $t_2$ respectively. The ratio of $\frac{t_2}{t_1}$ is

A boat man finds that he can save 8 s in crossing a river by quickest path than by the shortest path. If the velocity of the boat and the river flow are 13 m/s and 12 m/s respectively, then the width of the river is:

A ball falls freely from rest on to a hard horizontal floor and repeatedly bounces. If the velocity of the ball just before the first bounce is 7 m/s and the coefficient of restitution is 0.75, the total distance travelled by the ball before it comes to rest (acceleration due to gravity = 10 ms$^{-2}$) is

The length of a metal bar is 20 cm and the area of cross-section is $ 4 \times 10^{-4} $ m$^2$. If one end of the rod is kept in ice at $ 0^\circ C $ and the other end is kept in steam at $ 100^\circ C $, the mass of ice melted in one minute is 5 g. The thermal conductivity of the metal in Wm$^{-1}$K$^{-1}$ is (Latent heat of fusion = 80 cal/gm)

A body is thrown with a velocity $ (5\hat{i} + 6\hat{j}) \, \text{m/s} $. Its maximum height is (given that acceleration due to gravity = $ 10 \, \text{m/s}^2 $):

Which of the following is NOT a unit of permeability?

An alternating current is given by $ i = (3 \sin \omega t + 4 \cos \omega t) $ A. The rms current will be:

A lamp is rated at 240V, 60W. When in use the resistance of the filament of the lamp is 20 times that of the cold filament. The resistance of the lamp when not in use is:

Two toroids with number of turns 400 and 200 have average radii respectively 30 cm and 60 cm. If they carry the same current, the ratio of magnetic fields in these two toroids is:

A ball at point ‘O’ is at a horizontal distance of 7 m from a wall. On the wall, a target is set at point ‘C’. If the ball is thrown from ‘O’ at an angle $ 37^\circ $ with horizontal aiming the target ‘C’. But it hits the wall at point ‘D’ which is a vertical distance $ y_0 $ below ‘C’. If the initial velocity of the ball is 15 m/s, find $ y_0 $. (Given $ \cos 37^\circ = \frac{4}{5} $)

Three blocks of masses 2 m, 4 m and 6 m are placed as shown in figure. If $ \sin 37^\circ = \frac{3}{5} $, $ \sin 53^\circ = \frac{4}{5} $, the acceleration of the system is:

If a ray of light takes $t_1$ and $t_2$ times in two media of absolute refractive indices $\mu_1$ and $\mu_2$ respectively to travel same distance, then the relation between the times and refractive indices is:

A ball falls freely from rest from a height of 6.25 m onto a hard horizontal surface. If the ball reaches a height of 81 cm after the second bounce from the surface, the coefficient of restitution is:

In a sport event a disc is thrown such that it reaches its maximum range of 80 m, the distance travelled in first 3 s is (g = 10ms$^2$)

A particle of mass 2 g and charge 6 $\mu$C is accelerated from rest through a potential difference of 60 V. The speed acquired by the particle is:

In a meter bridge experiment, a resistance of 9 Ω is connected in the left gap and an unknown resistance greater than 9 Ω is connected in the right gap. If the resistance in the gaps are interchanged, the balancing point shifts by 10 cm. The unknown resistance is:

The angle made by the resultant vector of two vectors $ 2\hat{i} + 3\hat{j} + 4\hat{k} $ and $ 2\hat{i} - 7\hat{j} - 4\hat{k} $ with the x-axis is:

The charge $ q $ (in coulombs) passing through a $ 10 \Omega $ resistor as a function of time $ t $ (in seconds) is given by: \[ q = 3t^2 - 2t + 6 \] The potential difference across the ends of the resistor at time $ t = 5 $ s is:

The percentage error in the measurement of mass and velocity are 3% and 4% respectively. The percentage error in the measurement of kinetic energy is: