List of top Physics Questions asked in AP EAPCET

The image formed by a convex mirror of focal length 30 cm is a quarter of the size of the object. The distance of the object from the mirror is
Two particles of masses 1 g and 2 g move towards each other with velocities 10 m/s and 20 m/s respectively. The velocity of the centre of mass of the system of the two particles is
A rod is found to be 0.05 cm longer at 40°C than it is at 10°C. The length of the rod at 0°C is (coefficient of linear expansion of the material of the rod = \( 1.5 \times 10^{-5} \, \text{°C}^{-1} \))
A capillary tube of radius 0.1 mm is dipped in water. The water rises to a height of 2 cm in the tube. If the surface tension of water is 0.072 Nm\(^{-1}\), the contact angle between water and wall of the tube is
A particle is executing simple harmonic motion. If the minimum time taken by the particle to move from extreme position to half of the amplitude is \( t_1 \), and the minimum time taken by the particle to move from mean position to half of the amplitude is \( t_2 \), then
The time taken for the amplitude of vibrations of a damped oscillator to drop to 25% of its initial value is \( t \). The time taken for its mechanical energy to drop to 50% of its initial mechanical energy is
The fractional change in the volume of a glass slab when subjected to hydraulic pressure of 14 atm is (Bulk modulus of glass = \( 40 \times 10^9 \, \text{Nm}^{-2} \))
Satellites which give high value data for remote sensing, meteorology, and environmental studies are
A body of mass 10 g is tied to a string of length 0.4 m and it is whirled in a horizontal plane with a speed of 6 m/s. Then the tension in the string is
Three particles of each mass \( m \) are kept at the three vertices of an equilateral triangle. If \( I_1 \) is the moment of inertia of the system of the particles about an axis along one side of the triangle and \( I_2 \) is the moment of inertia of the system of the particles about an axis along the perpendicular bisector of a side, then \( I_1 : I_2 \) is
The kinetic energy of a car is doubled when its velocity is increased by 1 m/s. Then the initial velocity of the car is
Two bodies of masses \( m_1 \) and \( m_2 \) are dropped from two different heights \( h_1 \) and \( h_2 \) respectively. The ratio of the times taken by the two masses to touch the ground is (neglect air resistance)
The magnitude of the external force acting on moving bodies can be known directly by
A car of mass 1000 kg having a velocity of 10 m/s collides a horizontally mounted spring. If the spring constant is 4000 N/m, then the maximum compression of the spring is
The sum of the magnitudes of two vectors acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at \( 90^\circ \) with the vector of smaller magnitude, then the magnitudes of the vectors are
If the velocity of a particle moving along a straight line with uniform acceleration, is given by \( V = \sqrt{196 - 16X} \, \text{m/s} \), then its acceleration is
If speed of light in vacuum (\(3 \times 10^8\) m/s), acceleration due to gravity (\(10 \, \text{m/s}^2\)), and mass of electron (\(9.1 \times 10^{-31} \, \text{kg}\)) are taken as fundamental physical quantities, then the unit of time in this system is
Among the following, the possible nuclear reaction is:
The intensity of ground waves decreases with the increase of distance travelled is due to:
n-type semiconductor is formed when germanium is doped with:
In a transistor amplifier used in CE configuration, the phase difference between input voltage and output voltage is:
The variation of charge \( q \) with time \( t \) on a parallel plate capacitor is given by \( q = q_0 \cos(\omega t) \). The displacement current through the capacitor is:
A changing current in a coil can induce an emf in a nearby coil. This process is:
If the radius of the Earth is \( 6.4 \times 10^6 \, m \) and its magnetic dipole moment is \( 1.3 \times 10^{23} \, Am^2 \), then the magnetic field at the equator is:
The resistance \( R \), the inductive reactance \( X_L \), and the capacitive reactance \( X_C \) of a series LCR circuit connected to an ac source are related by \( R = 0.6 X_L = 3 X_C \). The impedance of the circuit is: