List of top Questions asked in AP EAMCET

In a Galvanometer, if the number of turns in the coil are doubled, then the electrical current sensitivity will be:
A conducting rod of length \( l \) and mass \( m \) is placed over a smooth horizontal plane. A magnetic field \( B \) is acting perpendicular to the rod. If a charge \( q \) is suddenly passed through the rod and the rod acquires an initial velocity \( v \) on the plane surface, then the charge \( q \) is:

In the given circuit the currents are \( I_1 = 5A \), \( I_4 = 10A \), and \( I_5 = 15A \). Analyzing the circuit using Kirchhoff’s laws, then \( I_2 \), \( I_3 \), and \( I_6 \) values are:

A metallic wire of resistance 30 \( \Omega \) is bent in the form of an equilateral triangle. The resistance between any two vertices of the triangle is:

A unit positive charge is moved from point A to point B by a distance of 20 cm, on an equipotential surface as shown in the figure. The work done to move this charge is:

The resultant capacitance of parallel combination of two capacitors \( C_1 \) and \( C_2 \) is 20 µF. When these capacitors are individually connected to a voltage source of 1V, then the energy stored in \( C_2 \) is 9 times that of \( C_1 \). If these two capacitors are connected in series, the resultant capacitance value is:
Two like charges are separated in air by a certain distance. The air is replaced with a dielectric medium of constant \( K \). Then the repulsive force between them:
In Young's double slit experiment, the intensity on the screen where the path difference between the two interfering waves is \( \frac{\lambda}{4} \) is \( K \). What will be the intensity at the point where the path difference is \( \frac{\lambda}{4} \)?

Three glass slabs A, B, C of different media are arranged as shown in the figure. Refractive index of B is 1.3 and the refractive index of C is 1.7. If the number of waves passing through B and C are equal to the total number of waves passing through B and C, then the refractive index of slab A is:

On a sonometer, the lengths of two wires are in the ratio \( \frac{35}{34} \), diameters are in the ratio \( \frac{4}{1} \), densities are in the ratio 1:2 and the tensions in the string are in the ratio 8:1. If the note of higher pitch has frequency of 350 Hz then find the frequency of the beats produced when sounded together:
At a given temperature, arrange the gases hydrogen, oxygen, nitrogen in the order of maximum rms speeds:
Which of the following is incorrect regarding the first law of thermodynamics?
A diatomic gas does a work of \( \frac{Q}{4} \) when a heat of \( Q \) is supplied to it. Then the molar heat capacity of the gas is:
A 25 kW drilling machine is drilled for 4 minutes to bore a hole in an aluminium block of mass \(20 \times 10^3\) kg. If 40\% of the work done is utilized to raise the temperature of the block and if the specific heat of aluminium is \(0.9 \, {kJ/kg}^\circ C\), then the rise in temperature of aluminium block is:

200 g of water is heated from 40°C to 60°C. The change in its internal energy [No expansion is taken place] specific heat of water is 4200 J kg⁻¹ K⁻¹

The reading of a pressure-meter attached to a closed pipe (with water) is \(3.5 \times 10^5 \, {Nm}^{-2}\). On opening the valve of the pipe, the reading is reduced to \(3.0 \times 10^5 \, {Nm}^{-2}\). The speed of the water flowing out the pipe is:
A block of mass 100 g is attached to the end of a string of unknown material of 50 cm long and cross-sectional area of \(2 \, {cm}^2\). When the block is whirled horizontally at a constant angular speed of 40 m/s, it moves along a circular path of radius 52 cm. Young's modulus of the material is:
The depth \( d \) at which the value of acceleration due to gravity becomes \( \frac{1}{n} \) times the value at the surface (radius of Earth \( R \)) is:

The blocks A and B weighing 100 N and 250 N respectively are placed one over the other as shown in the figure. Block B rests on a smooth surface. The coefficient of static friction between A and B is 0.4. When \( F = 250 \, {N} \), the acceleration of the upper block is (Take acceleration due to gravity, \( g = 10 \, {m/s}^2 \)):

The period of oscillation of a particle in simple harmonic motion is 4 s, and its amplitude is 4 cm. Then the distance of the particle in \( \frac{1}{3} \) seconds after passing the mean position is:
A simple pendulum with a bob of mass \( m \) and density \( \rho \) and length \( l \) is immersed in a liquid of density \( \sigma \). If it makes small oscillations, then the time period of the pendulum is:
Two objects of masses 2 kg and 5 kg possess velocities \( 10 \hat{i} \, {m/s} \) and \( 3 \hat{i} + 5 \hat{j} \, {m/s} \) respectively. Then the velocity of C.M. in m/s is:
A motor car is moving at 40 m/s on a circular road of radius 400 m. If its speed is increasing at the rate of 3 m/s², then its acceleration is:

Direct solar energy is incident on the horizontal surface at an average rate of 200 W/m². If 20% of this energy can be converted to useful electrical energy, how much area is needed to supply 8 kW?

The momentum of a body of mass 2 kg is 10 kg m/s. A force 2 N acts on the body in the direction of motion for 5 s. The increase in kinetic energy is: