List of top Questions asked in AP EAPCET

The statement related to law of definite proportions is:
Identify the reaction/process in which the entropy increases.
A cyclic process involves 3 states with 1 mole of ideal gas as follows:\ State 1: \( T = 300 \text{ K},\ P = 15 \text{ bar} \)\ State 2: \( T = 300 \text{ K},\ P = 10 \text{ bar} \)\ State 3: \( T = 300 \text{ K},\ P = 5 \text{ bar} \)\ Calculate the total work done during one complete cycle.
The formation of ammonia from its constituent elements is an exothermic reaction. \ The effect of increase in temperature on the reaction equilibrium is:
Output of the following logic circuit is:
logic circuit
The maximum number of TV signals that can be transmitted along a co-axial cable is:
If \( \Delta x \) is the uncertainty in position and \( \Delta v \) is the uncertainty in velocity of a particle and both are equal, then the correct expression for uncertainty in momentum for the same particle is:
The number of radial nodes and angular nodes in a 4f orbital are respectively:
Lithium shows diagonal relationship with element X and aluminum with element Y. Identify X and Y respectively.
The correct order of the metallic character of the elements Be, Al, Na, K is:
Choose the correct option from the following:
An electromagnetic wave travels along the z-axis. At a certain point in space, the electric field is \( 8.7 \, \text{Vm}^{-1} \) along the x-axis. What is the magnitude of the magnetic field along the y-axis?
A coil of inductance \( 0.1 \, \text{H} \) and resistance \( 110 \, \Omega \) is connected to an AC source of \( 110 \, \text{V}, 350 \, \text{Hz} \). What is the phase difference between the voltage maximum and the current maximum?
If the average power per unit area delivered by an electromagnetic wave is \( 9240 \, \text{Wm}^{-2} \), what is the amplitude of the magnetic field in the wave?
A beam of light with intensity \( 10^5 \, \text{Nm}^{-2} \) and cross-sectional area \( 20 \, \text{cm}^2 \) is incident on a fully reflective surface at an angle of \( 45^\circ \). Find the force exerted by the beam on the surface.
The metal which has the highest work function in the following is:
For a hydrogen atom, the energy of a stationary electron is given by \( E_n = -\frac{13.6}{n^2} \, \text{eV} \). The energy required to excite the electron to the second excited state and to the ionized state are:
The graph of \( \ln \left( \frac{R}{R_0} \right) \) versus \( \ln A \), where \( R \) is the radius of a nucleus, \( A \) its mass number, and \( R_0 \) a constant, is:
A capacitor \( C_1 = 1\, \mu\text{F} \) is charged using a 9 V battery. It is then disconnected and connected to capacitors \( C_2 = 2\, \mu\text{F} \) and \( C_3 = 3\, \mu\text{F} \) as shown. Find the charge on \( C_3 \) after equilibrium is reached.
A capacitor C1 = 1µF is charged using a 9 V battery
Two positive charges of 10 \( \mu \text{C} \) and 12 \( \mu \text{C} \) are 10 cm apart. What is the work done in bringing them 6 cm closer?
Current density in a cylindrical wire of radius \( R \) varies with radial distance as \( \beta (r + r^2) \). What is the current through the shaded section (sector angle \( \pi/6 \)) of the wire as shown in the figure?
Current density in a cylindrical wire of radius R
A cell supplies currents of 1 A and 0.5 A through resistors of 2.5 \( \Omega \) and 10 \( \Omega \), respectively. The internal resistance of the cell is:
Two infinite wires are placed at \( x = -2 \, \text{cm} \) and \( x = 1 \, \text{cm} \) along the y-axis, each carrying current upward. An electron is fired from the origin at \( 45^\circ \) to the x-axis with speed \( U \). The force on the electron at the moment of launch is:
(\( B_0 \) is the field at origin due to the wire at \( x = 1 \, \text{cm} \))
Two electrons \( e_1 \) and \( e_2 \), both having mass \( m \) and charge \( q \), are projected perpendicular to a magnetic field \( B \). If the kinetic energy of \( e_1 \) is twice that of \( e_2 \), what is the relation between their rotation frequencies \( f_1 \) and \( f_2 \)?
A compass needle oscillates 20 times per minute at a location with dip \( 45^\circ \) and magnetic field \( B_1 \). It oscillates 30 times per minute at another location where dip is \( 30^\circ \) and field is \( B_2 \). Find the ratio \( \frac{B_1}{B_2} \).