List of top Physics Questions asked in AP EAPCET

The type of radioactive decay that involves the emission of a positron is
If the wavelength of the signal to be transmitted by an antenna is increased by \(2\) times, then the effective power radiated by the antenna
The value of \(Q\) in the given digital circuit is
The kinetic energy of the released electron in photoelectric effect depends on
An inductor of inductance \[ 5\,\text{H} \] is carrying an electric current of \[ 4\,\text{mA}. \] Then the energy stored in the inductor is
An electron has an angular momentum of \[ 90h\ \text{J s} \] while orbiting with a linear velocity of \[ \pi\times10^5\ \text{m s}^{-1}. \] Then the radius of the orbit is \[ \left( m_e=9\times10^{-31}\,\text{kg}, \quad h=6.6\times10^{-34}\,\text{J s} \right) \]
The ratio of the turns per unit length in two inductors is \[ 2:1. \] Then the ratio of the impedances produced by the inductors is
A bulk magnetic material has volume \[ 2\,\text{m}^3 \] and its magnetization is found to be \[ 2\,\text{A m}^{-1}. \] Then the magnetic moment of the bulk material is
A light of energy flux \[ 9\ \text{W cm}^{-2} \] is incident for \(20\) minutes on a black surface of area \[ 100\ \text{cm}^2. \] Then the maximum average force exerted on the surface is \[ (c=3\times10^8\ \text{m s}^{-1}) \]
A charged particle is moving parallel to a uniform magnetic field. Then the force on the charged particle is
216 identical spherical drops each having a positive charge of \[ 10\,\text{nC} \] combine to form a big spherical drop. If the radius of each small drop is \[ 3\,\text{mm}, \] then the capacitance and electric potential of the big drop are respectively
A toroid of \(1000\) turns has average radius \[ \frac{\mu_0}{\pi}\ \text{metre}. \] If a current of \(1\,A\) is flowing through it, then the magnetic field intensity inside the coil of the toroid is
When two wires are connected in the two gaps of a meter bridge, the balancing point is obtained at a distance of \(48.4\) cm from the left end of the bridge wire. If the wire in the left gap is stretched so that its resistance increases by \(3.2\%\) and the wire in the right gap is stretched so that its resistance increases by \(10\%\), then the new balancing length from the left end of the bridge wire is nearly
A parallel plate capacitor of capacitance \[ 12\,\mu\text{F} \] is charged to a potential of \[ 180\,\text{V}. \] If the distance between the plates of the capacitor is \[ \frac{3}{\sqrt{\pi}}\ \text{mm}, \] then the energy density of the electric field between the plates is
When an external resistor of resistance \(18\,\Omega\) is connected to a cell, the current drawn from the cell is \(I\). If another \(18\,\Omega\) resistor is connected parallel to the first resistor, the current drawn from the cell increases by \(90\%\), then the internal resistance of the cell is
The percentage decrease in the intensity of polarized light when it is passed through an analyser at an angle of \(60^\circ\) is
A convex lens of refractive index \[ \frac{3}{2} \] has a power of \[ 5\,D. \] If it is placed in a liquid of refractive index \(2\), the new power of the lens is
An observer moves towards a stationary source of sound with a velocity equal to one-fourth of the velocity of sound. Then the percentage increase in the apparent frequency observed by the observer is
A dentist uses a mirror of focal length \(24\,\text{mm}\). He views a cavity in the tooth of a patient by holding the mirror at a distance of \(16\,\text{mm}\) from the cavity. The magnification is
The translational kinetic energy of the molecules of \(22\) grams of \(CO_2\) at \(27^\circ C\) is \[ (R=8.314\ \text{J mol}^{-1}\text{K}^{-1}) \]
Two large circular metal plates each of radius \(50\,\text{cm}\) carrying equal and unlike charges are parallel to each other. If the electric field between the plates is \[ 720\ \text{N C}^{-1}, \] then the magnitude of charge on any one plate is
A thermodynamic system goes from states \[ \text{i)}\quad (P,V)\ \rightarrow\ (P,2V) \] \[ \text{ii)}\quad (P_1,V)\ \rightarrow\ (2P_1,V) \] Then the works done in these two cases are
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
Match the law/principle with the concerned application: \[ \begin{array}{|c|c|} \hline \textbf{Application} & \textbf{Law / Principle} \\ \hline a)\ \text{Hydraulic Lift} & i)\ \text{Bernoulli's Principle} \\ \hline b)\ \text{Speed of Efflux} & ii)\ \text{Torricelli's Law} \\ \hline c)\ \text{Dynamic Lift} & iii)\ \text{Stoke's Law} \\ \hline d)\ \text{Viscous Drag Force} & iv)\ \text{Pascal's Law} \\ \hline \end{array} \]
The pressure \(P_1\) and density \(d_1\) of a diatomic gas change to \(P_2\) and \(d_2\) during an adiabatic operation. Find the value of \[ \frac{P_1}{P_2}, \] if \[ \frac{d_2}{d_1}=32. \]