List of top Physics Questions asked in AP EAPCET

A student is at a distance of 16 m from a bus. The bus starts accelerating from rest with $ a = 9 \, \text{m/s}^2 $. The minimum velocity with which the student should run towards the bus to catch it is $ \alpha \sqrt{2} \, \text{m/s} $. Find $ \alpha $.
The component of a vector $ \vec{P} = 3\hat{i} + 4\hat{j} $ along the direction $ \hat{i} + 2\hat{j} $ is
A projectile is launched from the ground, such that it hits a target on the ground which is 90 m away. The minimum velocity of the projectile to hit the target is (acceleration due to gravity $ g = 10\, \text{m/s}^2 $)
A ball is projected from the ground into the air. At a height of 5 m, its velocity is \( \vec{v} = (5 \hat{i} + 5 \hat{j}) \, \text{m/s} \). The maximum height reached by the ball is: \( (g = 10 \, \text{m/s}^2) \)
In semiconductors, which of the following are true:
A hydrogen atom is excited to \( n = 4 \). Find the potential energy of the electron in excited state.
In a photoelectric experiment, light of wavelength 800 nm produces photoelectrons with de Broglie wavelength 1 nm, and 400 nm light gives 0.5 nm. Find work function of the metal.
Carrier wave and modulating wave voltages increase by 1% and 3%. Find change in modulation index.
If radius of nucleus with mass number 64 is 4.8 fermi, find mass number of nucleus of radius 6 fermi.
A coil (100 turns, radius 3 cm, resistance 4 \(\Omega\)) is co-axial with solenoid (200 turns/cm, diameter 4 cm). Solenoid current drops from 2 A to 0 in 0.04 s. Find induced current.
Light of intensity 12 W/m\(^2\) is incident on 4 cm\(^2\) black surface. Find radiation pressure.
Given: \( E = E_0 \sin(kx - \omega t),\ B = B_0 \sin(kx - \omega t) \). Choose correct relation.
Capacitive reactance is 3 k\(\Omega\). If connected to a source of double frequency, what is new reactance?
Toroid has 4900 turns, \( I = 12\ \text{A} \), average radius = \( 24.5\ \text{cm} \). Find magnetic field inside core.
A steel wire with magnetic moment \( M \) and length \( l \) is bent into semicircle of radius \( R \). Find new magnetic moment.
A magnetic needle points down at \(30^\circ\) to the horizontal. Horizontal component of earth’s magnetic field = 0.3 G. Find the total magnetic field.
Double convex lens has radii of curvature 4 cm and 8 cm. Refractive index = 1.5. Find focal length.
A charged particle performs SHM in hole through uniformly charged solid sphere. Find frequency.
Assertion (A): In constant potential region, electric field is zero. Reason (R): From Gauss’s Law, zero electric field means zero enclosed charge.
Statement (A): Inside a charged hollow metal sphere, \( E = 0 \), \( V \neq 0 \).
Statement (B): Work done in moving a charge on an equipotential surface is zero.
Statement (C): When two like charges are brought closer, their electrostatic potential energy increases.
In YDSE, \( \lambda = 600\ \text{nm} \), fifth fringe at 6 mm. When \( \lambda = 400\ \text{nm} \), third fringe is at:
A wire of length 2 m, cross-sectional area \( 4\ \text{mm}^2 \), and current 1.6 A has electron drift time \( 40 \times 10^{-3} \ \text{s} \). Find electron number density.
Find the current \( i \) in the given circuit.
Find the current i in the given circuit.
A metal tape calibrated at \( 25^\circ C \) is used at \( -15^\circ C \). Coefficient of linear expansion is \( 1 \times 10^{-5}\ /\ ^\circ C \). Find percentage error in measurement.
A gas goes through: (i) isothermal expansion \( W = 50J \), (ii) adiabatic \( W = ? \), (iii) isothermal expansion \( W = 20J \). Total \( \Delta U = -30J \). Find work in adiabatic.