List of top Physics Questions asked in AP EAMCET

When 40 J of heat is absorbed by a monatomic gas, the increase in the internal energy of the gas is
The length of a metal bar is 20 cm and the area of cross-section is \( 4 \times 10^{-4} \) m\(^2\). If one end of the rod is kept in ice at \( 0^\circ C \) and the other end is kept in steam at \( 100^\circ C \), the mass of ice melted in one minute is 5 g. The thermal conductivity of the metal in Wm\(^{-1}\)K\(^{-1}\) is (Latent heat of fusion = 80 cal/gm)
Two masses \( m_1 \) and \( m_2 \) are connected by a light string passing over a smooth pulley. When set free, \( m_1 \) moves downwards by 3 m in 3 s. The ratio of \( \frac{m_1}{m_2} \) is \((g = 10 \text{ m/s}^2)\).
Time period of a simple pendulum in air is \( T \). If the pendulum is in water and executes SHM, its time period is \( t \). The value of \( \frac{T}{t} \) is [Density of bob is \( \frac{5000}{3} \) kg/m\(^3\)]
The moments of inertia of a solid cylinder and a hollow cylinder of the same mass and same radius about the axes of the cylinders are \( I_1 \) and \( I_2 \). The relation between \( I_1 \) and \( I_2 \) is
A wheel of angular speed 600 rev/min is made to slow down at a rate of \( 2 \) rad/s\(^2\). The number of revolutions made by the wheel before coming to rest is
A spring of \( 5 \times 10^3 \) Nm\(^{-1} \) spring constant is stretched initially by 10 cm from the unstretched position. The work required to stretch it further by another 10 cm is
In an inelastic collision, after collision the kinetic energy
A ball is projected at an angle of \( 45^\circ \) with the horizontal. It passes through a wall of height \( h \) at a horizontal distance \( d_1 \) from the point of projection and strikes the ground at a distance \( d_1 + d_2 \) from the point of projection, then \( h \) is:
One second after projection, a projectile is travelling in a direction inclined at \( 45^\circ \) to horizontal. After two more seconds it is travelling horizontally. Then the magnitude of velocity of the projectile is ( \( g = 10 \) ms\(^{-2}\)):
A carrier wave of peak voltage 16 V is used to transmit a message signal. What should be the peak voltage of the modulating signal in order to have a modulation index of 75%?
When a transistor in CE configuration, the resistance connected at the collector circuit and base circuit are 10 \( \Omega \) and 8 \( \Omega \) respectively, if the AC current gain \( \beta_{{ac}} = 1.4 \), then the voltage amplification is
Two amplifiers are connected one after the other in series (cascaded). The first amplifier has a voltage gain of 10 and the second has a voltage gain of 20. If the input signal is 0.01 Volt, calculate the output AC signal.
The rate of a radioactive disintegration at an instant is \( 10^8 \, {s}^{-1} \). The half-life of the radioactive sample is \( 3.3 \times 10^{12} \, {s} \). The number of radioactive atoms present in the sample at that instant of time is
The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of a hydrogen atom is
The ratio of de-Broglie wavelengths for the electron and proton moving with the same velocity is given as (m\(_e\): mass of electron, m\(_p\): mass of proton)

The electric field for an electromagnetic wave is given by \( E = 40 \sin(kz - 6 \times 10^8 t) \), where the magnitude of \( E_0 \) is in V/m.
The magnitude of the wave vector \( k \) is 
 

In a series LCR circuit, the voltage across resistance of \( 2000 \, \Omega \) is 200 V and the resonant frequency is \( 400 \, {rad/s} \). The capacitance \( C \) value is 4 μF. At resonance, the voltage across \( L \) is
A helicopter has metallic blades with length 4 m extending outward from the central point and rotating at 3 rev/s. If the vertical component of Earth's magnetic field is 40 µT, then the emf induced between the blade tip and the central point is
A superconductor exhibits:

Two bar magnets A and B are identical and arranged as shown. Their lengths are negligible compared to the separation between them. A magnetic needle placed between the magnets at point P gets deflected through an angle \( \theta \) under their influence. The ratio of distances \( d_1 \) and \( d_2 \) is: 


 

Two charged particles of the same charge but different masses \(m_1\) and \(m_2\) are projected with the same velocity \(V\) normally into the uniform magnetic field \(B\) as shown in the figure. The maximum separation of the particles is: 

A wire of resistance 0.2 \( \Omega/{cm} \) is bent to form a square ABCD of side 10 cm. A similar wire is connected between the corners B and D. If 2 V battery is connected across A and C, the power dissipated is 

What is the equivalent resistance between the points A and B of the network? 


 

“Introduction of a small charged sphere into a larger one allows us to keep piling up a larger and larger amount of charge on the latter” – This is the principle of the: