List of top Physics Questions asked in AP EAPCET

Two metal rods \(A\) and \(B\) have lengths in the ratio \(1:2\), thermal conductivities in the ratio \(1:2\) and cross-sectional areas in the ratio \(1:4\). The ends of the two rods are maintained between the same temperature difference. Then the ratio of heat currents \[ \left(\frac{H_A}{H_B}\right) \] is
The moment of inertia of a rod about an axis passing through its centre and perpendicular to its length is \[ I=\frac{1}{12}ML^2, \] where \(M\) is the mass and \(L\) is the length of the rod. The rod is bent in the middle so that the two halves make an angle of \(60^\circ\). The moment of inertia of the bent rod about the same axis would be
In the arrangement shown, \[ k_1=1500\,\text{N m}^{-1}, \qquad k_2=500\,\text{N m}^{-1}, \] \[ m_1=2\,\text{kg}, \qquad m_2=1\,\text{kg}. \] The potential energy stored in the system of springs in equilibrium is (spring masses negligible and \(g=10\,\text{ms}^{-2}\)).
When a uniform bar of length \(l\), breadth \(b\) and thickness \(d\) is supported by rigid supports near the ends and loaded at the centre by a vehicle of mass \(M\), the bar sags by an amount \(\delta\). If \(Y\) is the Young's modulus of the material, then \(\delta\) is
A body executes SHM under the influence of one force and has a time period of \(T_1\) seconds. The same body executes SHM with a time period of \(T_2\) seconds under the influence of another force separately. When both forces act simultaneously and in the same direction, then the time period of the body is
An artificial satellite of mass \(m\) revolves around a planet in a circular orbit of radius \(R\) under the influence of an attractive central force given by \[ F\propto R^{-5/2}. \] How do the orbital velocity \(V\) and time period \(T\) depend on the orbital radius \(R\)?
A solid cylinder rolls down an incline without slipping. Its acceleration depends on
A ball \(A\) collides with another identical ball \(B\) which is at rest. After collision, if the velocity of ball \(B\) becomes two times the final velocity of ball \(A\), then the coefficient of restitution is
Rain is falling vertically with a speed of \(2\,\text{ms}^{-1}\). A boy from rest starts moving with a constant acceleration of \(2\,\text{ms}^{-2}\) along a straight road holding an umbrella. For the rain to be always parallel to the axis of umbrella, the rate at which the angle of axis of umbrella with the vertical should be changing at time \(t\) is
A cricketer can throw a ball with a speed of \(V_0\). If he throws the ball while running with a speed \(V_0\), at an angle \(\alpha\) with the horizontal, then the range of the ball will be maximum when \(\alpha\) is
A solid sphere of mass \(2\,\text{kg}\) is at rest inside a cube as shown in the figure. The cube moves with velocity \[ \vec v=(5t\,\hat i+2t\,\hat j)\,\text{ms}^{-1}, \] where \(t\) is time in seconds. If the sphere is at rest with respect to the cube, find the force exerted by the sphere on the cube. (All surfaces are smooth and \(g=10\,\text{ms}^{-2}\)).
A block of mass \(2\,\text{kg}\), moving along the \(X\)-axis on a horizontal surface with a speed of \(4\,\text{ms}^{-1}\), enters a rough surface from \(x=0.5\,\text{m}\) to \(x=1.5\,\text{m}\). The retarding force on this rough surface is \[ F=-12x\ \text{N}. \] The speed of the block as it just crosses the rough surface is
A car travels first half of the distance with a velocity \(V\) and second half of the distance with a velocity \(3V\), then the average velocity is
The blades of a windmill sweep out a circle of area \[ A=2\,\text{m}^2. \] The wind is flowing with velocity \[ V=6\,\text{ms}^{-1} \] perpendicular to the circle and the density of air is \[ \rho=1.2\,\text{kgm}^{-3}. \] Then the power of the mill is
If the percentage error in the measurement of radius is \(2\%\), then the error in measurement of volume of a sphere is
The following circuit represents the logic gate
The half-life of a radioactive substance is 20 minutes. $\frac{1}{3}$rd part of substance has decayed in time $t_1$ and $\frac{2}{3}$rd part of it has decayed in time $t_2$. Then, ($t_2 - t_1$) is nearly
In photo electric experiment, if the wavelength of incident light on the metal changes from 200 nm to 300 nm. The decrease in stopping potential is about ($\frac{hc}{e} = 1240$ eV - nm)
An amplitude modulated wave is represented by $C_m(t) = 30 \sin 300\pi t + 10(\cos 200\pi t - \cos 400\pi t)$. Then the carrier wave frequency, signal frequency and modulation index are respectively
In the pfund series of hydrogen spectrum, the wavelength of first spectral line is (Rydberg constant = 1.097 $\times 10^7$ m$^{-1}$)
The coefficient of mutual induction between the primary and secondary coil of a transformer is $0.4\text{ H}$. When the current in the primary coil changes at the rate of $10\text{ As}^{-1}$, then the induced emf in the secondary will be:
Match the following, if $X_{\text{L}}$ and $X_{\text{C}}$ are inductive and capacitive reactances respectively:
Which one of the following laws is modified by Maxwell to obtain four electromagnetic equations known as Maxwell's equations?
Two long parallel straight conductors separated by $10\text{ cm}$ carrying currents $20\text{ A}$, $40\text{ A}$ in the same direction. The work required per unit length to move the conductors apart to $30\text{ cm}$ is [Take $\log_{10} 3 = 0.4771$]:
Magnetic field at $0.1\text{ m}$ from a long straight wire carrying $10\text{ A}$ current is: