List of top Physics Questions asked in AP EAPCET

A bomb at rest explodes into three pieces of equal masses. If two pieces move perpendicular to each other, each with a speed \( v \), then the speed of the third piece is:
The resultant of two vectors \( \mathbf{A} \) and \( \mathbf{B} \) is perpendicular to vector \( \mathbf{A} \), and the resultant magnitude is equal to half of the magnitude of \( \mathbf{B} \). The angle between \( \mathbf{A} \) and \( \mathbf{B} \) is:
A steel ball of radius 0.05 cm and density \( 7.8 \, \text{g/cm}^3 \) is dropped into water. What is its terminal velocity?
(Density of water \( = 1 \, \text{g/cm}^3 \), Viscosity of water \( = 0.001 \, \text{Pas} \))
The energy (in eV) possessed by a neon atom at $77^\circ$C is (Boltzmann constant, $k_B = 1.38 \times 10^{-23}$ J K$^{-1}$)
A block of mass \( m \) and charge \( q \) is connected to a point 'O' with an inextensible string. This system is on a horizontal table. An electric field \( E \) is applied perpendicular to the string and in the plane of the horizontal table. The tension in the string when it becomes parallel to the electric field 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:
A convex lens has radius of curvature \( R = 40 \, \text{cm} \) for both surfaces and refractive index \( \mu = 1.5 \). Find the focal length.
A message signal of frequency \(20~\text{kHz}\) and peak voltage \(20~\text{V}\) is used to modulate a carrier of peak voltage \(100~\text{V}\). The modulation index is
A standing wave having 3 nodes and 2 antinodes is formed between two atoms separated by a distance of \( 1.21 \, \text{\AA} \). The wavelength of the wave is:
A satellite of mass 500 kg is in an orbit around the earth at a distance of \( 6.67 \times 10^6 \, m \) from the center of the Earth. The speed of the satellite is:
A body 'A' of mass $ m_1 $ moving with a velocity of 6 m/s collides with another body 'B' of mass $ m_2 $ which is at rest. After collision if 'A' moves with 2 m/s and 'B' moves with 3 m/s in the initial direction of A, then the ratio of $ \frac{m_1}{m_2} $ is
The force acting per unit length when a very long straight conductor is carrying a steady current of 1 A and the direction of the current is from south to north is (The horizontal component of the earth's magnetic field at the place is \( 3 \times 10^{-5} \) T and the direction of the field is from the geographical south to geographical north.)
The efficiency of a bulb of \(1000~\text{W}\) is \(6%\). The peak value of the magnetic field produced by the electromagnetic radiation from the bulb at a distance of \(1~\text{m}\) is: \[ \left( \frac{1}{4\pi \varepsilon_0} = 9 \times 10^9~\text{Nm}^2\text{C}^{-2} \right) \]
A car of mass 1500 kg is moving with 20 ms\(^{-1}\) velocity. If the breaks are applied it comes to rest in 5 seconds, then the retarding force is
When the voltage applied across a reverse biased p-n junction diode is increased, then the diffusion current
Three point charges 1 C, 2 C and 3 C are plad at the corners of an equilateral triangle of side one metre. The work done to move these charges to the corners of another equilateral triangle of side 0.5 m is
For the given concentration, if the ratio of the diameters of the molecules of two gases is 1 : 2, then the ratio of their mean free paths is
A bullet of mass 20 g moving with $500 \text{ ms}^{-1}$ is pierd 1 cm into a wooden block, then the retarding for experiend by the bullet is
A spring has a spring constant 200 Nm\(^{-1}\). If it is stretched by 1 cm then the potential energy stored in it is:
A wave is reflected from a rigid support. The change in phase on reflection will be
The maximum possible height of a mountain on Earth is approximately.
An infinite line charge produces a field of \(9 \times 10^4 \, \text{NC}^{-1}\) at a distance of 2 cm. The linear charge density is
The value of acceleration due to gravity at a height of \( 4R_E \) from surface of earth is \[ R_E \text{ is radius of earth and acceleration due to gravity on the surface of the earth = 10 ms}^{-2} \]
The device that can detect optical signals is
If the pressure of a gas increases by 2% at constant volume, then its temperature