List of top Physics Questions asked in AP EAPCET

Frequencies in the UHF range normally propagate by means of:
A circular loop of wire of radius $ 14\, \text{cm} $ is placed in a magnetic field directed perpendicular to the plane of the loop. If the field decreases steadily at a rate of $ 0.05\, \text{T/s} $, what is the magnitude of the induced emf in the loop?
The magnetic field in a plane electromagnetic wave is given by: $$ \vec{B} = (3 \times 10^{-7}) \sin(3 \times 10^4 x + 9 \times 10^{12} t) \hat{j} $$ What is the corresponding electric field $ \vec{E} $ of the wave?
An RLC series circuit has:
- Resistance $ R = 150\, \Omega $
- Capacitance $ C = 20\, \mu\text{F} $
- Inductance $ L = 500\, \text{mH} $
- AC voltage $ V = 100\, \text{V} $
- Angular frequency $ \omega = 400\, \text{rad/s} $
Find the phase angle $ \phi $ between current and voltage.
Which of the following statements is correct regarding the photoelectric effect?
Choose the correct statement regarding nuclear properties:

Find the equivalent capacitance between points A and B in the given circuit:

The electric field in a region of space is given by $ \vec{E} = (5\, \text{N/C})\,x\,\hat{i} $. Consider point A on the y-axis at $ y = 5\, \text{m} $ and point B on the x-axis at $ x = 2\, \text{m} $. If the potentials at A and B are $ V_A $ and $ V_B $ respectively, then $ (V_B - V_A) $ is:
Two short magnets with equal dipole moments $ M $ are placed perpendicularly at their centers. The magnitude of the magnetic field at a distance $ d $ from the center on the bisector of the right angle is:
A large number of positive charges, each of magnitude $ q $, are placed along the x-axis at the origin and at every 1 cm distance in both directions. The electric flux through a spherical surface of radius 2.5 cm centered at the origin is:
The number of rotational degrees of freedom of a diatomic molecule is:
The slopes of the isothermal and adiabatic $ p \text{-} v $ graphs of a gas are $ S_I $ and $ S_A $ respectively. If the heat capacity ratio of the gas is $ \gamma = \frac{3}{2} $, then $ \frac{S_I}{S_A} = $ ?
5 g of ice at $ -30^\circ \text{C} $ and 20 g of water at $ 35^\circ \text{C} $ are mixed in a calorimeter. The final temperature of the mixture is:
(Neglect heat capacity of the calorimeter. Specific heat capacities: ice = $ 0.5 \, \text{cal/g}^\circ\text{C} $, water = $ 1 \, \text{cal/g}^\circ\text{C} $, latent heat of fusion of ice = $ 80 \, \text{cal/g} $)

A hydraulic lift is shown in the figure. The movable pistons A, B and C are of radius 10 cm, 100 cm and 5 m respectively. If a body of mass 2 kg is placed on piston A, the maximum masses that can be lifted by pistons B and C are respectively:

An iron sphere of diameter $ D $ and mass $ M $ is immersed in hot water, causing its temperature to rise by $ \Delta T $. If $ \alpha $ is the coefficient of linear expansion, the change in surface area of the sphere is:

A small disc of mass $ m $ slides down with initial velocity zero from the top (A) of a smooth hill of height $ H $, having a horizontal portion (BC) as shown in the figure. If the height of the horizontal portion of the hill is $ h $, then the maximum horizontal distance covered by the disc from the point D is

A block of mass $ 50\, \text{kg} $ is pulled at a constant speed of $ 4\, \text{m/s} $ across a horizontal floor by an applied force of $ 500\, \text{N} $ directed $ 30^\circ $ above the horizontal. The rate at which the force does work on the block in watts is:
A particle is executing simple harmonic motion with instantaneous displacement: $$ x = A \sin^2\left( \omega t - \frac{\pi}{4} \right) $$ The time period of oscillation of the particle is:
A body is travelling with $ 10\, \text{m/s} $ on a rough horizontal surface. Its velocity after $ 2\, \text{s} $ is $ 4\, \text{m/s} $. The coefficient of kinetic friction between the block and the plane is
(acceleration due to gravity = $ 10\, \text{m/s}^2 $)
If two vectors $ \vec{A} $ and $ \vec{B} $ are mutually perpendicular, then the component of $ \vec{A} \cdot \vec{B} $ along the direction of $ \vec{A} + \vec{B} $ is
The energy $ E $ of a system is a function of time $ t $ and is given by: $$ E(t) = \alpha t - \beta t^3 $$ where $ \alpha $ and $ \beta $ are constants. Find the dimensions of $ \alpha $ and $ \beta $.
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 hydrogen atom is excited to \( n = 4 \). Find the potential energy of the electron in excited state.
Carrier wave and modulating wave voltages increase by 1% and 3%. Find change in modulation index.