List of top Physics Questions asked in TS EAMCET

A supposition without assuming that it is true is:
Pebbles are dropped freely for every half second into a river from a bridge above it. When the first pebble is about to strike the surface of the water, the fifth pebble is dropped. Then the height from the surface of the water from which the pebbles are dropped is (Acceleration due to gravity = 10 m/s²).
A cannon fires two similar shells one after the other each with a velocity of 100 m/s at angles 60$^\circ$ and 30$^\circ$ respectively with the horizontal such that they both hit the target at the same time. The time interval between the firing of the two shells is (Acceleration due to gravity = 10 m/s²).
A 60 kg man standing on a bridge, jumps vertically down onto a 540 kg boat moving in the river below him with a speed of 10 m/s. The change in the speed of the boat is:
A body of mass 'm' tied to one end of a string is whirled in a vertical circle of radius 'R' with zero tension in the string at its highest point. The angle made by the string with the vertical when the kinetic energy of the body becomes half of its maximum kinetic energy is:
The equation of motion of a damped oscillator is given by \( m\frac{d^{2}x}{dt^{2}}+b\frac{dx}{dt}+kx=0 \). The dimensional formula of \( \frac{b}{\sqrt{km}} \) is

In a time ‘’t", the amplitude of vibrations of a damped oscillator becomes half of its initial value, then the mechanical energy of the oscillator decreases by:

Young's double slit experiment is performed with monochromatic light of wavelength \( 6000 \text{Ã…} \). If the intensity of light at a point on the screen where the path difference is \( 2000 \text{Ã…} \) is \( I_1 \) and the intensity of light at a point where path difference is \( 1000 \text{Ã…} \) is \( I_2 \), then the ratio \( I_1: I_2 \) is:

When the temperature of a wire is increased from 303 K to 356 K, the resistance of the wire increases by 10\%. The temperature coefficient of resistance of the material of the wire is:

Three resistors of resistances \(10 \Omega\), \(20 \Omega\), and \(30 \Omega\) are connected as shown in the figure. If the points A, B, and C are at potentials \(10 V\), \(6 V\), and \(5 V\) respectively, then the ratio of the magnitudes of the currents through \(10 \Omega\) and \(30 \Omega\) resistors is:
 


 

If Planck's constant is \( 6.63 \times 10^{-34} \) Js, then the slope of a graph drawn between cut-off voltage and frequency of incident light in a photoelectric experiment is:

Three logic gates are connected as shown in the figure. If the inputs are \( A = 1 \) and \( B = 1 \), then the values of \( y_1 \) and \( y_2 \) respectively are:
 


 

A body of mass 'm' tied to one end of a string is whirled in a vertical circle of radius 'R' with zero tension in the string at its highest point. The angle made by the string with the vertical when the kinetic energy of the body becomes half of its maximum kinetic energy is:
An incompressible fluid is flowing through a tube of uniform cross-section. The increase in the power of the pump required to double the rate of flow is:
Two solid spheres of radii \( r_1 \) and \( r_2 \) (\( r_2>r_1 \)) made of the same material are kept in contact. The distance of their center of mass from their point of contact is:
The ratio of the values of acceleration due to gravity at heights \( h_1 \) and \( h_2 \) from the surface of the earth is \( 16:9 \). If height \( h_1 = 2R_E \), then \( h_2 \) is:
The ratio of the lengths of two wires A and B made of same material is 2:1. The diameter of wire A is twice the diameter of wire B. If both the wires are stretched by same tension, the ratio of the energies stored in wires A and B is:
The displacement of a particle in simple harmonic motion is given by: \[ x = A_0 \cos \left( \frac{\pi}{2} t \right) \] The distance traveled by the particle in the interval between \( t = 2 \) and \( t = 5 \) seconds and its position at \( t = 5 \) second are:
Two spherical rain drops of radii in the ratio 4:5 are falling vertically through air. The ratio of the terminal velocities of the rain drops is:
A liquid drop of diameter 2 mm breaks into 125 identical drops, then the change in the surface energy is:
A metal block of mass 120 g is heated to a temperature of 100$^\circ$C and placed on a huge block of ice at 0$^\circ$C. The specific heat capacity of the metal is 0.12 cal/$^\circ$C and the latent heat of fusion of ice is 80 cal/g. The mass of the ice melted is:
The temperatures of the source and sink of a Carnot’s heat engine are 27$^\circ$C and 127$^\circ$C respectively. If the absolute temperature of the sink is decreased by 10\%, the efficiency of the engine:
A uniform narrow tube of length one metre with one end closed contains 25 cm long mercury thread, which traps a column of air at the closed end. When the tube is held vertically with the open end up, the length of the air column near the closed end is 21 cm and when the tube is held horizontally, the length of the air column near the closed end is ‘L’. If the atmospheric pressure is equal to the pressure of 75 cm of mercury, then \( L \) is:

As shown in the figure, a block is placed in front of a convex lens. Choose the most appropriate image of the block from the following options:
 

When unpolarized light incident from air on another medium at an angle of 60°, the reflected light is completely polarized. The refractive index of the medium is: