List of top Physics Questions asked in TS EAMCET

Ohm's law is valid when:
One end of a metal wire of length \(100\text{ cm}\) and radius \(0.6\text{ mm}\) is attached to an end of another wire made of the same metal of length \(180\text{ cm}\) and radius \(0.9\text{ mm}\). If the free end of the longer wire is kept at a potential of \(20\text{ V}\) and the free end of the shorter wire is kept at a potential of \(2\text{ V}\), then the potential at the junction of the two wires is:
When a cell is connected to either $2\,\Omega$ or $4.5\,\Omega$ resistors, if the power consumption is same in both the cases, then the internal resistance of the cell is:
The ratio of the speeds of light in a prism P and in vacuum is \(1:\sqrt3\) and the angle of minimum deviation is \(60^\circ\). In another prism Q of same angle of prism, if the angle of minimum deviation is \(30^\circ\), then the refractive index of the material of prism Q 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:
In minimum deviation position of a prism made of refractive index \(\sqrt3\), the angle of deviation of the light ray is \(\frac{\pi}{6}\). If a light ray incidents normally on the first face of the prism, then the angle of incidence of the light ray on the second face of the prism is:
A point object is at rest on the principal axis at a distance of 20 cm from a concave mirror of radius of curvature 30 cm. Under the action of a horizontal force, the object moves away from the mirror along the axis and reaches a distance of 40 cm from the mirror in a time of 3 s. The acceleration of the image is:
Focal lengths of objective = 20 m and eyepiece = 1 cm. Find angular magnification of telescope.
If the angles of minimum deviation when a prism of angle \(80^\circ\) is placed separately in air and in a liquid are \(40^\circ\) and \(10^\circ\) respectively, then the refractive index of the liquid is
If a convex lens of focal length \(22.5\text{ cm}\) is moved between an object and a screen placed \(120\text{ cm}\) apart, then the ratio of the minimum and maximum magnifications is:
A card divided into squares each of size \(1\ \mathrm{mm^2}\) is viewed through a magnifying glass of focal length \(10\) cm which is held close to the eye. The distance at which the lens is to be placed from the card to view the squares with maximum possible magnification is
A thin convex lens forms a virtual image when an object is placed on the principal axis at a distance of 12 cm from the lens. When the object is moved away from the lens along the principal axis through a distance of 18 cm, the lens forms a real image. If the magnification of the virtual image is five times the magnification of the real image, then the focal length of the lens is
Angle of minimum deviation for a prism --- the ray inside the prism:
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
\(5\) moles of monoatomic gas and one mole of rigid diatomic gas are mixed. The internal energy at temperature \(127^\circ C\) is (Given \(R=8.31Jmol^{-1}K^{-1}\))
The angle of inclination of an inclined plane is \(45^\circ\). If the coefficient of kinetic friction between the inclined plane and a block on it is \(0.2\), then the block released from rest from the top of the inclined plane reaches the bottom of the plane in a time of \(3\) s. If the coefficient of kinetic friction between the block and the inclined plane is \(0.8\), then the time taken by the same block to reach the bottom of the plane is
A body of weight \(W\) is hung with the help of a rope of negligible mass from a helicopter moving in a vertical plane. If the vertical upward acceleration and the horizontal acceleration of the helicopter are each equal to the acceleration due to gravity, then the tension in the rope is:
Two blocks of masses 4.5 kg and 5.5 kg are connected to the two ends of a light inextensible string passing over a frictionless pulley fixed to a rigid support. At time $t=0$, the blocks are released from rest. The distance travelled by the larger block in a time $t=4$ s is (Acceleration due to gravity $=10\,ms^{-2}$)
A man of mass \(60 \text{ kg}\) is standing in a lift moving up with a retardation of \(2.8 \text{ ms}^{-2}\). The apparent weight of the man is
Two rods A and B are made of different materials having thermal conductivities in the ratio \(2:3\). The lengths of the rods A and B are in the ratio \(2:1\) and their volumes are in the ratio \(1:2\). In the steady state, if the temperature differences across the ends of rods A and B are respectively \(60^\circ\text{C}\) and \(\Delta\theta\), the ratio of rates of flow of heat through rods A and B is \(1:16\), then \(\Delta\theta=\)
Two identical boxes A and B have thermal conductivities 180 and 270 W m$^{-1}$K$^{-1}$. Ice in A melts in 21 min. Time for half ice in B to melt is:}
Two liquids A and B of masses \(m\) and \(2m\) at temperatures \(30^\circ\text{C}\) and \(50^\circ\text{C}\) respectively are mixed in a vessel of mass \(5m\) which is at a temperature of \(20^\circ\text{C}\). If the ratio of the specific heat capacities of the liquids A and B is \(1:2\) and the specific heat capacity of the material of the vessel is \(0.3\) times the specific heat capacity of liquid A, then the resultant temperature of the mixture is:
An air bubble rises from the bottom of a lake of depth \(37\) m. The temperature of the lake is constant from the bottom to the top and atmospheric pressure is equal to the pressure due to \(10\) m of water column. The percentage increase in the volume of the bubble when it rises from a depth of \(20\) m to a depth of \(15\) m is
A cylindrical vessel contains two immiscible liquids A and B of densities $750$ kg m$^{-3}$ and $1000$ kg m$^{-3}$. Thicknesses are 10 m and 15 m respectively. Atmospheric pressure is $10^5$ Pa. Ratio of absolute pressures at bottom and interface is:}
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