List of top Physics Questions asked in AP EAPCET

In the circuit, the cells are having negligible resistances. If the galvanometer shows null deflection, then the value of \( V \) is:
galvanometer shows null deflection,
Two charges \( Q \) and \( 4Q \) are separated by a distance of 6 cm. The distance of the point from \( 4Q \) at which the net electric field is zero is:
The equivalent capacitance between A and B in the given figure is:
equivalent capacitance between A and B
The ratio of radii of two wires is 1:2 and the density of their materials are in the ratio 1:4. If same tension is applied to both the wires then the ratio of the speed of transverse waves produced in them is:
The frequency of a light ray is \( 6 \times 10^{14} \) Hz. Its frequency when it propagates in a medium of refractive index 1.5, will be:
If the rms speeds of helium and oxygen are equal, then the ratio of the temperatures of helium and oxygen is:
A steel ball of mass 200 g falls freely from a height of 20 m and bounces to a height of 10.8 m from the ground. If the energy lost in this process is absorbed by the ball, the rise in its temperature is:
The phenomena of lowering freezing point of water by the application of pressure is known as:
In a Carnot’s engine, as the gas absorbs heat energy from the source, then the temperature of the source:
A uniform solid sphere of mass \( M \) and radius \( a \) is surrounded by a concentric uniform thin spherical shell of mass 0.5M and radius 1.5a. The gravitational potential energy of a unit mass kept at a distance of 2.5a from the center is:
A ball of mass 10 g is allowed to fall down from 10 m height. After collision with the ground, if 50\% of its energy is lost, then the height reached by the ball is:
When an external force with angular frequency \( \omega_0 \) acts on a system of natural angular frequency \( \omega \), the system oscillates with angular frequency \( \omega_d \). The condition for the amplitude of oscillations to be maximum is:
A bomb at rest explodes into three pieces of equal masses. If two pieces move perpendicular to each other, each with a speed \( v \), then the speed of the third piece is:
The number of significant figures in 4.870 m is:
A lorry is moving on a smooth circular path of radius 50 m with a velocity of 20 m/s. Then the banking angle of the road is:
The resultant of two vectors \( \mathbf{A} \) and \( \mathbf{B} \) is perpendicular to vector \( \mathbf{A} \), and the resultant magnitude is equal to half of the magnitude of \( \mathbf{B} \). The angle between \( \mathbf{A} \) and \( \mathbf{B} \) is:
The load resistance and the base-emitter voltage of a transistor in CE configuration are 5 kΩ and 0.02 V respectively. If the collector current is 2 mA, then its voltage gain is
The device that can detect optical signals is
The laser in an audio compact disc uses light of wavelength \( 7.8 \times 10^{-2} \, \text{nm} \). What is the frequency of light emitted by the laser?
The process of retrieval of information from the carrier wave
A resistor of resistance \( R \) and an inductor of inductive reactance \( R \) are connected in series to an ac source. A capacitor of capacitive reactance \( 2R \) is then connected in series with \( L \) and \( R \). The ratio of the power factors of LR and LCR circuits is
An ac generator converts
When a metal target is bombarded with high-energy electrons, the electromagnetic waves generated are
The magnitude of the axial field due to a short bar magnet at a distance of 50 cm from its mid-point is
The nucleus having highest binding energy per nucleon is