List of top Physics Questions asked in AP EAMCET

A block of metal 4 kg is in rest on a frictionless surface. It was targeted by a jet releasing water of 2 kg/s at a speed of 10 ms\(^{-1}\). The acceleration of the block is:
A machine with efficiency \( \frac{2}{3} \) used 12 J of energy in lifting a 2 kg block through a certain height and it is allowed to fall through the same. The velocity while it reaches the ground is:
The maximum height attained by the projectile is increased by 10% by keeping the angle of projection constant. What is the percentage increase in the time of flight?
A person climbs up a conveyor belt with a constant acceleration. The speed of the belt is \( \sqrt{\frac{g h}{6}} \) and the coefficient of friction is \( \frac{5}{3\sqrt{3}} \). The time taken by the person to reach from A to B with maximum possible acceleration is: \includegraphics[]{87.png}
The velocity of a particle is given by the equation \( v(x) = 3x^2 - 4x \), where \( x \) is the distance covered by the particle. The expression for its acceleration is:
The length of the side of a cube is \( 1.2 \times 10^{-2} \) m. Its volume up to correct significant figures is:
If the energy gap of a substance is 5.4 eV, then the substance is:

The voltage gain and current gain of a transistor amplifier in common emitter configuration are respectively 150 and 50. If the resistance in the base circuit is 850 \(\Omega\), then the resistance in the collector circuit is:

One mole of radium has an activity of \( \frac{1}{6.3 \times 10^{37}} \) kilo curie. Its decay constant is:

The speed of the electron in a hydrogen atom in the \( n = 3 \) level is:

If the kinetic energy of a particle in motion is decreased by 36%, the increase in de Broglie wavelength of the particle is:
Inner shell electrons in atoms moving from one energy level to another lower energy level produce:

The ratio of the number of turns per unit length of two solenoids A and B is \(1:3\) and the lengths of A and B are in the ratio \(1:2\). If the two solenoids have the same cross-sectional area, the ratio of the self-inductances of the solenoids A and B is:

At a place where the magnitude of the earth's magnetic field is \(4 \times 10^{-5} \, T\), a short bar magnet is placed with its axis perpendicular to the earth's magnetic field direction. If the resultant magnetic field at a point at a distance of 40 cm from the center of the magnet on the normal bisector of the magnet is inclined at \(45^\circ\) with the earth's field, the magnetic moment of the magnet is:

Two long straight parallel conductors A and B carrying currents 4.5 A and 8 A respectively are separated by 25 cm in air. The resultant magnetic field at a point which is a distance of 15 cm from conductor A and 20 cm from conductor B is:

Three parallel plate capacitors of capacitances \(4 \mu F\), \(6 \mu F\), and \(12 \mu F\) are first connected in series and then in parallel. The ratio of the effective capacitances in the two cases is:

Three point charges \( +q, +2q, \) and \( +4q \) are placed along a straight line such that the charge \( +2q \) lies equidistant from the other two charges. The ratio of the net electrostatic force on charges \( +q \) and \( +4q \) is:

If a microscope is placed in air, the minimum separation of two objects seen as distinct is 6 µm. If the same is placed in a medium of refractive index 1.5, the minimum separation of the two objects to see as distinct is:
A pipe with 30 cm Length is open at both ends. Which harmonic mode of the pipe resonates a 1.65 kHz source? (Velocity of sound in air = 330 m/s)
An ideal gas is kept in a cylinder of volume \(3 \, {m}^3\) at a pressure of \(3 \times 10^5 \, {Pa}\). The energy of the gas is
The efficiency of a Carnot's engine is 25%, when the temperature of sink is 300 K. The increase in the temperature of source required for the efficiency to become 50% is
The absorption coefficient value of a perfect black body is
Two mercury drops, each with same radius \( r \), merged to form a bigger drop. If \( T \) is the surface tension of mercury, then the surface energy of the bigger drop is given by
Depth of a river is \(100 \, {m}\). Magnitude of compressibility of the water is \(0.5 \times 10^{-9} \, {N}^{-1}{m}^2\). The fractional compression in water at the bottom of the river is (Acceleration due to gravity = \(10 \, {m/s}^2\))

What is the height from the surface of earth, where acceleration due to gravity will be \( \frac{1}{4} \) of that of the earth? (Re = 6400 km)