List of top Physics Questions asked in TS EAMCET

In an n-type semiconductor, electrons are majority charge carriers and holes are minority charge carriers. The charge of an n-type semiconductor is?
An inductor of inductive reactance \( R \), a capacitor of capacitive reactance \( 2R \), and a resistor of resistance \( R \) are connected in series to an AC source. The power factor of the series LCR circuit is?
The mutual inductance of two coils is \( 8 \) mH. The current in one coil changes according to the equation \( I = 12 \sin 100t \), where \( I \) is in amperes and \( t \) is time in seconds. The maximum value of emf induced in the second coil is?
Two long straight parallel wires A and B separated by \( 5 \) m carry currents \( 2 \) A and \( 6 \) A respectively in the same direction. The resultant magnetic field due to the two wires at a point \( 2 \) m distance from the wire A in between the two wires is?
The work done in blowing a soap bubble of volume \( V \) is \( W \). The work done in blowing the bubble of volume \( 2V \) from the same soap solution is?
A ball P of mass \( 0.5 \) kg moving with a velocity of \( 10 \, ms^{-1} \) collides with another ball Q of mass \( 1 \) kg at rest. If the coefficient of restitution is \( 0.4 \), the ratio of the velocities of the balls P and Q after the collision is?
Three logic gates are connected as shown in the figure. If the inputs are \( A = 0 \), \( B = 1 \), and \( C = 1 \), then the values of \( y_1 \), \( y_2 \), and \( y_3 \) are respectively:
logic gates
The power gain of a transistor operating in common emitter configuration is 32,000. If the input and output resistances of the circuit are 1200 \( \Omega \) and 6000 \( \Omega \) respectively, then the current gain is:
If two linear antennas having lengths in the ratio 2:3 are emitting radiations of wavelengths in the ratio 8:9, then the ratio of effective powers radiated by them are in the ratio:
Two photons of energies 2.5 eV and 5.5 eV incident on a metal surface of work function 1.5 eV. The ratio of the maximum speeds of the photoelectrons emitted from the metal surface is:
In a nuclear reactor of efficiency 25%, the number of fissions taking place per second is \( 5 \times 10^{13} \). If 200 MeV energy is released per fission, then the output power of the reactor is:
In a radioactive sample \( 2 \times 10^8 \) nuclei reduce to \( 10^8 \) nuclei in 15 minutes, then the half-life of the sample in minutes is:
Magnetic field on the axis of a short bar magnet of magnetic moment \( M \), at a distance \( x \) from its centre is:
A current \( i \) flows through a circular loop of radius \( R \). The ratio of the magnetic field produced at its centre to the field produced at a point at a distance \( \frac{R}{\sqrt{3}} \) from its centre on its axis is:
Two particles of charges in the ratio \( 1:2 \) and masses in the ratio \( 2:3 \) moving along a straight line enter a uniform magnetic field at right angles to the direction of the field. If the radii of the circular paths of the particles in the magnetic field are in the ratio \( 3:4 \), then the ratio of the initial linear momenta of the two particles is:
Two equal resistances are connected in the two gaps of a meter bridge. If the resistance in the right gap is doubled, then the change in the balancing length is:
The quality factor of a series LCR resonant circuit is 75. If the resistance is decreased by 50% and the inductance is increased by 100%, then the quality factor of the circuit is:
The self-induced emf of a coil is 36 V. If the current in the coil is changed from 12 A to 24 A in one second, then the change in the energy stored in the coil is:
The ratio between electric field energy density and magnetic field energy density of an electromagnetic wave, in its region is:
If the relaxation time is doubled and the applied electric field is tripled, then the drift speed of electrons:
Two identical balls having like charges placed at a certain distance apart, repel each other with a force \( F \). When they are brought in contact and then moved apart to a distance equal to half of their initial separation, the force of repulsion between them becomes \( 4.5F \). The ratio of the initial charges of the balls is:
The frequency of sound heard by a stationary observer is \( f_1 \), when the source of sound is approaching the observer with a speed of 10% of the speed of sound. If the same source of sound is moving away from the stationary observer with a speed of 20% of the speed of sound, the frequency of sound heard by the observer is \( f_2 \). Then \( f_1 : f_2 \) is:
When unpolarized light incident from air on another medium at an angle of 60°, the reflected light is completely polarized. The refractive index of the medium is:
The capacitance of a parallel plate capacitor is 1.5 µF. If the distance between the plates is halved and the space between the plates is filled with a medium of dielectric constant 3, then the new capacitance is:
A boy of height 1.2 m is standing in front of a large concave mirror of radius of curvature 20 m at a distance of 40 m from the mirror. The distance of the image of the boy from the boy is: