List of top Physics Questions

Which of the following is carried by waves from one place to another?
The acceleration due to gravity:
A wooden cube floating in water supports a mass \(m = 0.2\,\text{kg}\) on its top. When the mass is removed, the cube rises by \(2\,\text{cm}\). The side of the cube is (density of water \(= 10^3\,\text{kg/m}^3\)):
Friction forces act:
The force of gravitation between two bodies does not depend on:
The effect of frictional force may be minimized by:
A stone of mass \(1\,\text{kg}\) is raised through \(1\,\text{m}\) height.
The centre of mass of a rigid body lies:
The motion of the centre of mass depends on:
If a body is moving at constant speed in a circular path, its:
Temperature can be expressed as derived quantity in terms of:
Electron volt is a unit of:
If a car is traveling north on a straight road and its brakes are applied, it will:
In a hydraulic lift, the surface area of the input piston is 6 cm² and that of the output piston is 1500 cm². If 100 N force is applied to the input piston to raise the output piston by 20 cm, then the work done is kJ.
The maximum speed of a boat in still water is 27 km/h. Now this boat is moving downstream in a river flowing at 9 km/h. A man in the boat throws a ball vertically upwards with speed of 10 m/s. Range of the ball as observed by an observer at rest on the river bank is cm. (Take g = 10 m/s²).
The coordinates of a particle with respect to origin in a given reference frame is \( (1, 1, 1) \) meters. If a force of \( \mathbf{F} = \hat{i} - \hat{j} + \hat{k} \) acts on the particle, then the magnitude of torque (with respect to origin) in the z-direction is:
A satellite of mass 1000 kg is launched to revolve around the earth in an orbit at a height of 270 km from the earth's surface. Kinetic energy of the satellite in this orbit is ______ x $10^{10}$ J.
(Mass of earth = $6 \times 10^{24}$ kg, Radius of earth = $6.4 \times 10^6$ m, Gravitational constant = $6.67 \times 10^{-11}$ Nm$^2$ kg$^{-2}$)
The length of a light string is 1.4 m when the tension on it is 5 N. If the tension increases to 7 N, the length of the string is 1.56 m. The original length of the string is ______ m.
A ray of light suffers minimum deviation when incident on a prism having angle of the prism equal to $60^\circ$. The refractive index of the prism material is $ \sqrt{2} $. The angle of incidence (in degrees) is ______ .
Consider a circular loop that is uniformly charged and has a radius $ \sqrt{2} $. Find the position along the positive $ z $-axis of the cartesian coordinate system where the electric field is maximum if the ring was assumed to be placed in the $ xy $-plane at the origin:

Match List-I with List-II.

List-IList-II
(A) Heat capacity of body(I) \( J\,kg^{-1} \)
(B) Specific heat capacity of body(II) \( J\,K^{-1} \)
(C) Latent heat(III) \( J\,kg^{-1}K^{-1} \)
(D) Thermal conductivity(IV) \( J\,m^{-1}K^{-1}s^{-1} \)
If $ \mu_0 $ and $ \epsilon_0 $ are the permeability and permittivity of free space, respectively, then the dimension of $ \left( \frac{1}{\mu_0 \epsilon_0} \right) $ is :
A bi-convex lens has radius of curvature of both the surfaces same as $ \frac{1}{6} \, \text{cm} $. If this lens is required to be replaced by another convex lens having different radii of curvatures on both sides $ (R_1 \neq R_2) $, without any change in lens power then possible combination of $ R_1 $ and $ R_2 $ is:

A body of mass 1kg is suspended with the help of two strings making angles as shown in the figure. Magnitude of tensions $ T_1 $ and $ T_2 $, respectively, are (in N): 

A sportsman runs around a circular track of radius $ r $ such that he traverses the path ABAB. The distance travelled and displacement, respectively, are: