List of top Physics Questions

Two masses as shown in the figure are suspended from a massless pulley. The acceleration of the system when masses are left free is

A tall man of height 6 feet, want to see his full image. Then required minimum length of the mirror will be

Calculate the net resistance of the circuit between A and B :

The kinetic energy of a body becomes four times its initial value. The new linear momentum will be

A car starts with acceleration $2\,m s^{-2}$. A scooterist starts towards the car with a velocity of $20\,ms^{-1}$. If the scooterist was $96\,m$ behind the car at the start, the time in which he overtakes the car is

$10\,CC$ of hydrogen and oxygen each are kept in separate flasks. Then the correct statement is

In Young's double slit experiment the separation between the slits is halved and the distance between the slits and the screen is doubled. The fringe width will

Equation of progressive wave is given by $y=a \, \sin\,\pi(40t-x)$ where $a$ and $x$ are in metre and $t$ in second. The velocity of the wave is (m/s)

A particle starts from (0,0) and moves along y-axis to a point (0,26) m and then to (0, -26) m. The ratio between distance and displacement is

In a charged capacitor the energy is stored in

Waves that cannot be polarised are

Radio waves and visible light in vacuum have

The resistance of an ideal ammeter is

Gravitational force is required for

A body of weight 72 N moves from the surface of earth at a height half of the radius of earth, then gravitational force exerted on it will be

Law of gravitation is not applicable if A) Velocity of moving objects are comparable to velocity of light B) Gravitational field between objects whose masses are greater than the mass of sun.

For the adjoining diagram, a triangular lamina is shown the correct relation between \(I_1\), \(I_2\) & \(I_3\) is:
(\(I\) – moment of inertia)

After an interval on one day ${1/6}^{th}$ of the initial amount of a radioactive material remains in a sample. Then its half life is

The relation between $\alpha\,and\,\beta$ parameters of a transistor is given by

An atom of mass number A and atomic number Z emits successively an $\alpha$-particle, a $\beta$-particle and a $\gamma$-ray. The mass number and atomic number of the end product are

Relative permeability of iron is 5500. Its magnetic susceptibility is

A point source of light S, placed at a distance L in front of the centre of a plane mirror of width d, hangs vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance 2L from it as shown. The greatest distance over which he can see the image of the light source in the mirror is

Electric field at centre O of semicircle of radius a having linear charge density $\lambda$ given as

A car battery of emf 12V and internal resistance 5×10^–2Ω,receives a current of 60Å from external source,then terminal voltage of battery is: