List of top Physics Questions asked in TS EAMCET

If the maximum and minimum amplitudes of an amplitude modulated wave are 9 V and 3 V respectively, then the modulation index is
A metal rod of area of cross-section \(3 \text{cm}^2\) is stretched along its length by applying a force of \(9 \times 10^4 \text{N}\). If the Young's modulus of the material of the rod is \(2 \times 10^{11} \text{Nm}^{-2}\), the energy stored per unit volume in the stretched rod is
A uniform metre scale of mass 700 g is suspended horizontally using two strings tied at 20 cm and 70 cm marks on the scale. The tension in the string at 70 cm mark is (Acceleration due to gravity = 10 m/s$^2$):
If the frequencies of the carrier wave and message signal are $1$ MHz and $28$ kHz respectively, then the frequencies of the side bands are
20 kV electrons can produce X-rays with a minimum wavelength of
If a body is projected vertically from the surface of the earth with a speed of \( 8000 \, \text{ms}^{-1} \), then the maximum height reached by the body is (Radius of the earth = 6400 km and acceleration due to gravity = \( 10 \, \text{ms}^{-2} \))
The graph between the input voltage ($V_i$) and the output voltage ($V_o$) of a transistor connected in common emitter configuration is shown in the figure. The active, saturation and cutoff regions of the transistor are respectively
A 132 V ac source is connected to a pure inductor of inductance 140 mH. If the frequency of the ac source is 50 Hz, then the current passing through the inductor is
If the energy released in the fission of one uranium nucleus is 200 MeV, then the number of fissions per second required to produce 20 MW is:
In Young's double slit experiment with light of wavelength \( \lambda \), the intensity of light at a point on the screen where the path difference becomes \( \frac{\lambda}{3} \) is (I is intensity of the central bright fringe)
In $\beta^-$ decay, a neutron transforms into a proton within the nucleus according to the equation:
neutron $\to$ proton + $\beta^-$ + $x$
In this equation the particle represented by 'x' is
A body of mass 0.5 kg is supplied with a power 'P' (in watt) which varies with time 't' (in second) as $P=3t^2+3$. If the velocity of the body at time t=0 is zero, then the velocity of the body at time t=3s is
The radius of stationary state (\(n=2\)) of hydrogen atom is \(x\) pm. The radius of stationary state (\(n=3\)) of \( \text{He}^{+} \) ion (in pm) is
The weight of a body at a height of 3$R_E$ from the surface of the earth is 90 N, where $R_E$ is the radius of the earth. The weight of the same body at a height of $R_E$ from the surface of the earth is:
If the permeability of a substance is $616 \times 10^{-5} \, NA^{-2}$, then the susceptibility of the substance is
The angle between the axes of the polarizer and the analyzer is $60^{\circ}$. The ratio of the intensity of unpolarized light incident on the polarizer and the intensity of the polarized light emerging from the analyzer is
A circular path of radius 75 m is banked at an angle of \(\tan^{-1}(0.2)\). If the coefficient of static friction between the tyres of the car and the circular path is 0.1, then the maximum permissible speed of the car to avoid slipping is
In the $\beta^{+}$ decay, the particle emitted along with neutron and positron is
A solid cylinder of mass 2 kg, length 40 cm and radius 10 cm is placed in contact with a solid sphere of mass 0.5 kg and radius 10 cm such that the centres of the two bodies lie along the geometrical axis of the cylinder. The distance of the centre of mass of the system of two bodies from the centre of the sphere is
The minimum velocity of a projectile is 50% of its maximum velocity. If the minimum velocity of the projectile is $10~\text{m s}^{-1}$ then the time of flight of the projectile is (Acceleration due to gravity = $10~\text{m s}^{-2}$
The driver of a bus moving with a velocity of 72 kmph observes a boy walking across the road at a distance of 50 m in front of the bus and decelerates the bus at 5 \( \text{ms}^{-2} \) by applying brakes and is just able to avoid an accident. The reaction time of the driver is
A metal rod of length 125 cm is clamped at its midpoint. If the speed of the sound in the metal is 5000ms\(^{-1}\), then the fundamental frequency of the longitudinal vibrations of the rod is
A force separately produces accelerations of 18 ms⁻², 9 ms⁻² and 6 ms⁻² in three bodies of masses P, Q and R respectively. If the same force is applied on a body of mass P+Q+R, then the acceleration of that body is
729 small identical spheres each charged to an electric potential 3V combine to form a bigger sphere. The electric potential of the bigger sphere is
The temperature at which the reading on Fahrenheit scale becomes 90% more than the reading on Celsius scale is