List of top Physics Questions asked in TS EAMCET

A wire of length \(L\) and cross-sectional area \(A\) has a Young's modulus \(Y\). If the wire is stretched by a force \(F\), the elongation produced in the wire is:
The initial and final velocities of a body projected vertically from the ground are \( 20 \, \text{ms}^{-1} \) and \( 18 \, \text{ms}^{-1} \) respectively. The maximum height reached by the body is (Acceleration due to gravity = \( 10 \, \text{ms}^{-2} \))
Which of the following is incorrect about the gravitational force between two bodies?
If 96.875% of a radioactive substance decays in 10 days, then the half life of the substance is (in days)
The square of resultant of two equal forces is three times their product. The angle between the forces is?
The distance for which ray optics becomes a good approximation for an aperture of 0.3 cm and a light of wavelength 6000 $\text{\AA}$ is
The dielectric constant of a medium is 8 and its relative permeability is 200. If an electromagnetic wave of frequency 100 MHz travels in this medium, then its wavelength is
A gaseous mixture contains 2 moles of monatomic gas and 2 moles of diatomic gas at a temperature of 500 K. The total internal energy of the gaseous mixture is
(Atmospheric pressure = $10^5$ Pa and universal gas constant = $8.3 \, J mol^{-1} K^{-1}$)
The distance of closest approach of an alpha particle from a nucleus when the alpha particle moves towards a nucleus with a kinetic energy 'E' is 'x'. The distance of closest approach when the alpha particle approaches the same nucleus with kinetic energy 0.4E is
If the system of blocks shown in the figure is released from rest, the ratio of the tensions $T_1$ and $T_2$ is (Neglect the mass of the string shown in the figure)
The relation between the displacement 'x' (in metre) and the time 't' (in second) of a particle is \( t = 2x^2+3x \). If the displacement of the particle is 25 cm from the origin (x=0), then the acceleration of the particle is
For an aperture of $5 \times 10^{-3}\,\mathrm{m}$ and a monochromatic light of wavelength $\lambda$, the distance for which ray optics becomes a good approximation is $50\,\mathrm{m}$, then $\lambda =$
An air column in a tube of length 50 cm, closed at one end is vibrating in its fifth harmonic. The phase difference between a particle at the open end and a particle at 42 cm from the open end is
When a long hollow steel pipe is struck with a hammer at one end, two sounds are heard at the other end. If the time interval between the two sounds heard is 0.53 s, then the length of the pipe is
(Speed of sound in steel is 5100 $ms^{-1}$ and speed of sound in air is 330 $ms^{-1}$)
The ratio of the average value of kinetic energy to that of potential energy for an SHM is:
The magnetic field at a point P on the axis of a short bar magnet of magnetic moment M is B. If another short bar magnet of magnetic moment 2M is placed on the first magnet such that their axes are perpendicular and their centres coincide. The resultant magnetic field at the point P due to both the magnets is
The specific heat capacity of one mole of water is (R is the universal gas constant):
Nitrogen and oxygen of volumes one litre each at atmospheric pressure are mixed in a closed container of volume three litres. If the process is isothermal, the ratio of final pressure of the mixture and atmospheric pressure is
A parallel plate capacitor with air as dielectric has a capacitance of 4 $\mu$F. The space between the plates of the capacitor is completely filled with a material of dielectric constant 5 and charged to a potential of 100 V. The work done to completely remove the dielectric material after the capacitor is disconnected from the battery is
The force (F in newton) acting on a particle of mass 90 g executing simple harmonic motion is given by $F+0.04\pi^2y=0$, where y is displacement of the particle in meter. If the amplitude of the particle is $\frac{6}{\pi}$ m, then the maximum velocity of the particle is
A steel rod with a circular cross-section of diameter 1cm and another steel rod with a square cross-section of side 1cm have equal mass. If the two rods are subjected to same tension, the ratio of the elongations of the two rods is
If the maximum and minimum amplitudes of an amplitude modulated wave are 9 V and 3 V respectively, then the modulation index is
A solenoid of 1000 turns per metre has a core of material with relative permeability 400. The windings of the solenoid are insulated from the core and a current of 2 A is passed through the solenoid. Then the value of the magnetic intensity inside the solenoid is
If a charge of 3 nC is placed at each vertex of a cube of side 3 m, then the electric potential at the centre of the cube is:
If 87.5% of atoms of a radioactive element decay in 6 days, then the fraction of atoms of the element that decay in 8 days is