List of top Physics Questions asked in TS EAMCET

The length of an open pipe is half of the length of another closed pipe. When the two pipes are vibrated, four nodes are formed in both the cases. The ratio of the frequencies of the open and the closed pipes is:

When a thin convex lens is immersed in a liquid of refractive index $1.2$, the focal length of the lens becomes $48\text{ cm}$. If the ratio of the radii of curvature of the lens is $2:3$ and the refractive index of the material of the lens is $1.5$, then the radii of curvature of the lens are:}

A Carnot engine operates between \(33^\circ C\) and \(133^\circ C\). During adiabatic expansion, relation is \(T\sqrt{V}=constant\). The work done by \(10\) moles during adiabatic expansion is

Two spherical black bodies A and B of equal radii are at temperatures \(2T\) and \(3T\). If surrounding temperature is \(T\), then ratio of radiant powers emitted by A and B is

If a capillary tube of inner radius \(0.5mm\) is immersed vertically in water, then mass of water risen in capillary tube is (Surface tension \(=0.07Nm^{-1}\), \(g=10ms^{-2}\))

A wire of length \(100\text{ cm}\) is made of a material of Young’s modulus \(1.6\times10^{11}\text{ Nm}^{-2}\). If work done in stretching this wire by \(0.1\text{ cm}\) is \(2\text{ J}\), then the area of cross-section of the wire (in \(10^{-5}\text{ m}^2\)) is

Water of mass \(3\text{ kg}\) in a kettle of mass \(1\text{ kg}\) at an initial temperature of \(30^\circ C\) is heated by a heater of power \(2\text{ kW}\). When the lid is open, heat is lost at a constant rate of \(250\text{ Js}^{-1}\). If specific heat capacity of kettle material is half that of water, then time required to raise temperature to \(80^\circ C\) is

Water flows through a horizontal pipe AB of non-uniform cross section. Water enters at A of area \(4cm^2\) with pressure \(10^5Nm^{-2}\) and velocity \(20ms^{-1}\). It leaves at B of area \(8cm^2\). The pressure at B is

The energy required to transfer a satellite of mass \(m\) from an orbit of height \(0.5R\) from the surface of the earth to an orbit of height \(2R\) from the surface of the earth is (where \(g\) is acceleration due to gravity and \(R\) is radius of earth)

A solid sphere rolls down without slipping on an inclined plane of angle \(30^\circ\). If angle increases to \(45^\circ\), percentage increase in acceleration is nearly

A body P of mass \(1.5\text{ kg}\) moving with velocity \(10\text{ ms}^{-1}\) makes a one dimensional elastic collision with another body Q at rest. If ratio of velocities after collision is \(1:3\), then velocity of centre of mass is

The power \(P\) (in watt) acting on a body of mass \(2\text{ kg}\) is given by \[ 4.5P=8t^2+14t+9 \] where \(t\) is time in second. If the body starts from rest at \(t=0\), then the velocity of the body at time \(t=3\text{ s}\) is

A block slides down a \(30^\circ\) inclined plane. Coefficient of friction on upper half is \[ \mu_1=\frac{1}{2\sqrt3} \] and on lower half is \[ \mu_2=\frac{1}{4\sqrt3} \] Find ratio of velocities at midpoint and bottom.

For a particle executing simple harmonic motion, if the velocities at distances \(6\text{ cm}\) and \(8\text{ cm}\) from mean position are \(16\pi\text{ cms}^{-1}\) and \(12\pi\text{ cms}^{-1}\) respectively, then maximum acceleration is

A bomb of mass \(m\) at rest explodes into three parts. If these three parts move horizontally with equal speeds in different directions, then the masses of the three parts can be

If \(B\) is magnetic induction, \(e\) is charge of electron, \(m\) is mass and \(c\) is speed of light in vacuum, then the physical quantity having dimensions of \[ \frac{4\pi mc}{Be} \] is

A body is thrown vertically upwards from earth with velocity \(60\text{ ms}^{-1}\). The ratio of displacements during first, second and third seconds is (\(g=10\text{ ms}^{-2}\))

The general solution of the differential equation \[ \frac{dy}{dx} = x^2y^2+3x^2y-2xy^2-6xy \] is

The unification of electromagnetism and optics is based on the discovery that

If minimum velocity of a projectile is \(15\text{ ms}^{-1}\) and maximum height reached is \(20\text{ m}\), then velocity of projection is (\(g=10\text{ ms}^{-2}\))

Evaluate \[ \int_{\pi/6}^{\pi/3} \frac{dx}{\sin2x(\tan^4x-\cot^4x)} \]

The area of the region bounded by the curves \[ y=x^2-3x+3 \] \[ y=2x^2-1 \] is

If \(a,b\) are arbitrary constants, then the differential equation corresponding to family \[ y=ax^2-2abx+ab^2 \] is

When an electron at rest is accelerated through an electric potential, the de Broglie wavelength associated with the electron is \(\lambda\). For the de Broglie wavelength associated with the electron to become \(\frac{2\lambda}{3}\), the percentage increase in the potential to be applied is: