List of top Questions asked in AP EAPCET

An electric dipole with dipole moment $2 \times 10^{-10}\, C \cdot m$ is aligned at an angle $30^\circ$ with the direction of a uniform electric field of $10^4\, N/C$. The magnitude of the torque acting on the dipole is
A velocity selector is to be constructed to select ions with a velocity of 6 km/s. If the electric field used is 400 V/m, then the magnetic field to be used is
A Carnot engine A working between temperatures 600 K and T (T \(<\) 600 K) and another Carnot engine B working between temperatures T (T \(>\) 400 K) and 400 K are connected in series. If the work done by both the engines is same, then T =
The stress-strain graph of two wires A and B is shown in the figure. If \(Y_A\) and \(Y_B\) are Young’s moduli of materials of wires A and B respectively, then
stress strain
The nature of the graph between the temperature in Fahrenheit and Celsius values is:
A force of 18 N is acting in the direction of motion of a body of mass 3 kg moving with a velocity of 2 ms\(^{-1}\). The velocity of the body when it displaces by 5 m is
The force required to stretch a steel wire of area of cross-section \(1 \ \text{mm}^2\) to double its length is
(Young’s modulus of steel \(= 2 \times 10^{11} \ \text{N/m}^2\))

If each resistance in the given figure is 9 $\Omega$, then the reading of the ammeter (A) is

If the linear momentum of a proton is changed by \(p_0\), then the de Broglie wavelength associated with the proton changes by 0.25%. Then the initial linear momentum of the proton is

In the given circuit, the potential difference across the plates of the capacitor \( C \) in steady state is

A Carnot engine A working between temperatures 600 K and T (T \(<\) 600 K) and another Carnot engine B working between temperatures T (T \(>\) 400 K) and 400 K are connected in series. If the work done by both the engines is same, then T =
A metallic disc of radius 0.3 m is rotating with a constant angular speed of \( 60 \, \text{rad s}^{-1} \) in a plane perpendicular to a uniform magnetic field of \( 5 \times 10^{-2} \, \text{T} \). The emf induced between a point on the rim and the centre of the disc is
The ratio of the orders of the spacings of nuclear energy levels and atomic energy levels is:
The voltage gain and the current amplification factor of a transistor in common emitter configuration are \( 300 \) and \( 60 \) respectively. If the collector resistance is \( 5 k\Omega \), then the base resistance is:
If the tension in the horizontal wire shown in the figure is 30 N, then the weight \( W \) and tension in the wire \( OA \) are respectively:
tension in the horizontal wire
The escape velocity of a body from a planet of mass \(M\) and radius \(R\) is 14 km/s. The escape velocity of the body from another planet having same mass and diameter \(8R\) (in km/s) is
In the given circuit, if \( A = 0 \), \( B = 1 \), and \( C = 1 \) are inputs, then the values of \( y_1 \) and \( y_2 \) are respectively
A=0B=1C=1
Two point charges +4µC and -9µC are placed 2m apart in air. Find the point on the line joining them where the electric potential is zero.
If the magnitude of the electric field of an electromagnetic wave in a medium is given by E = 107 sin(6 × 108 t - 0.01x) N C-1, then the frequency and speed of the electromagnetic wave respectively are: (In the equation x is in metre and t is in second)
A crane of efficiency 80% is used to lift 8000 kg of coal from a mine of depth 108 m. If the time taken by the crane to lift the coal is one hour, then the power of the crane (in kW) is (Acceleration due to gravity \( = 10 \, \text{m s}^{-2} \))
As shown in the figure, if the values of the electric potential at three points A, B and C in a uniform electric field (\( \vec{E} \)) are \(V_A\), \(V_B\), and \(V_C\) respectively, then
electric potential at three points A, B and C
If the equation of motion of a projectile is \( Y = AX - B X^2 \), then the ratio of the maximum height reached and the range of the projectile is:
If the horizontal range of a body projected with a velocity \(u\) is 3 times the maximum height reached by it, then the range of the body is:
If 5.6 liters of a monoatomic gas at STP is adiabatically compressed to 0.7 liters, then the work done on the gas is nearly
In space, the electric potential varies as $V = 20|r|$ volt, where $\vec{r} = x\hat{i} + y\hat{j} + z\hat{k}$ is the position vector. Then electric field in (N/C) at the point (4 m, 3 m, -5 m) is