List of top Physics Questions asked in AP EAMCET

In amplitude modulation, the amplitude of the carrier signal is 28 V and the modulation index is 0.4. The amplitude of the side bands is: 
 

In the given figures of logic gates, if the inputs are A=1, B=0, and C=1, find the values of \( y_1 \), \( y_2 \), and \( y_3 \) respectively. 

 

If the input frequency is 50 Hz, the output frequency of a full wave rectifier is: 
 

The time gap between 44% decay and 93% decay of a radioactive substance is 81 minutes. The half-life of the radioactive substance in minutes is:

The ratio of the wavelengths of the first and second Balmer lines of the hydrogen spectrum is: 
 

A proton and an alpha particle are moving with kinetic energies of 4.5 MeV and 0.5 MeV respectively. The ratio of the de Broglie wavelengths of the proton and alpha particle is: 

A magnetron valve is used to produce:
An inductor of inductive reactance 80 \(\Omega\) and a resistor of resistance 60 \(\Omega\) are connected in series to an ac source. The impedance and the power factor of the circuit are respectively:
A coil having 0.64 mH inductance and 0.8 \(\Omega\) resistance connected to a battery of 12 V. The energy stored in the magnetic field created by that coil is:
Relative permeability (\(\mu_r\)) of a sample is given by \(1<\mu_r<1 + \epsilon\), where \(\epsilon\) is a small positive number. Then the nature of the sample is:
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