List of top Questions asked in AP EAPCET- 2022

The tetra atomic molecules/ions with different shapes are
The combination of which of the following gives an ionic compound with maximum covalent character:
The number of valence electrons present in an element with atomic number \(117\) is
In which of the following, the elements Al, B, Mg and K are correctly arranged in the increasing order of their metallic character?
The wavelength of electron in the first orbit of hydrogen atom is \[ 3.3\times10^{-10}\,\text{m}. \] The kinetic energy of electron (in J) is:
\[ (h=6.6\times10^{-34}\,\text{Js},\ m_e=9.0\times10^{-31}\,\text{kg}) \]
Maximum number of electrons possible with spin quantum number \[ +\frac{1}{2} \] with principal quantum number \(n=4\) in an atom is:
The ratio of radii of \(3^{rd}\) and \(6^{th}\) Bohr's orbit in a hydrogen atom is
The correct order of electromagnetic waves with increasing frequency is
The frequency of the light emitted when an electron comes down from \(n=4\) to \(n=2\) level in hydrogen atom is \(\dfrac{3}{7}\) times of the following transition of the Li atom:
A particle of mass \[ 2\times10^{-27}\,\text{kg} \] has de-Broglie wavelength of \[ 3.3\times10^{-10}\,\text{m}. \] The kinetic energy of this particle is:
\[ \text{(Planck’s constant } h=6.6\times10^{-34}\,\text{J-s)} \]
The values of \(Y\) and \(Z\) in the given logic circuit are
The frequency suitable for beyond the horizon communication using sky wave is
A plane electromagnetic wave of frequency \(50\,MHz\) travels in free space. If the average energy densities in the electric field and magnetic field are \(K_E\) and \(K_B\) respectively, then
A metal loop of area \[ 10\,\text{cm}^2 \] is placed in a region such that its area vector points along \(\hat{k}\). The region contains a uniform magnetic field of magnitude \(1.73\,\text{T}\) that points in the direction \[ \hat{i}+\hat{j}+\hat{k}. \] When the magnetic field is switched off, the field decreases to zero at a steady rate in \(10\,\text{s}\), then the magnitude of emf induced in the loop is:
A \(70\,\text{mH}\) inductor is connected to \(220\,\text{V},\ 50\,\text{Hz}\) AC supply. The rms value of the current in the circuit is:
An isosceles triangular current carrying loop is kept perpendicularly in a uniform magnetic field \(B_0\), as shown in figure. The force on the loop due to magnetic field is
A charged particle moving in a uniform magnetic field penetrates a layer of lead and thereby loses half of its kinetic energy, then the radius of curvature of its path is:
A short bar magnet placed with its axis at \(45^\circ\) with a uniform external magnetic field of \(28.3\times 10^{-3}\,T\) experiences a torque of magnitude equal to \(3.6\times 10^{-5}\,J\). The magnitude of magnetic moment of the magnet is nearly
A ray of light is incident at \(30^\circ\) from a medium of refractive index \(2\) into a medium of refractive index \(1\). Then the angle of refraction is:
The quantities that don't change when a resistor connected to a battery is heated due to the current are:
(A) Drift speed (B) Resistivity (C) Resistance (D) Number of free electrons
A battery with a \(12\,\text{V}\) emf has an initial charge of \(80\,\text{A h}\). If the potential across the terminals stays constant until battery is completely discharged, then this battery can deliver energy at the rate of \(120\,\text{W}\) for a time:
In a space having electric field \[ \vec{E}=A(x\hat{i}+y\hat{j}) \] the potential at a point \((10\,m,20\,m)\) is zero, then the potential at the origin is
\[ [A=10\,Vm^{-2}] \]
Electric potential due to a space is given by \[ \phi(x,y,z)=\phi_0\frac{x_0}{x} \] when \(x_0=5\,m\) and \(\phi_0=8\,V\). Find the electric field at \((10\,m,5\,m,5\,m)\)
A charge \(Q\) is to be divided between two objects. The values of the charges on the objects so that the electrostatic force between them will be maximum is:
A Carnot engine operating between temperatures \(600\,K\) and \(300\,K\), absorbs \(800\,J\) of heat from the source. The mechanical work done per cycle is