List of top Physics Questions

The physical quantity that doesn’t have appropriate unit is

Which one of the following statements is CORRECT?

The position of a particle moving along $y$-axis is given as $y = t^2 + 2t + 3$. The average acceleration of the particle between $t=3s$ and $t=6s$ (in $ms^{-2}$) is

The ratio of distances traversed by a freely falling body in successive intervals of time is

The angular momentum of a uniform rod of mass $m$ and length $l$, rotating in a horizontal circle about one of its ends with an angular velocity $\omega$ is

The maximum and minimum distances of a satellite revolving in an elliptical orbit are in the ratio $3:1$. If the speed of the satellite at the nearest distance is $v$, then the speed at the farthest distance is

The ratio of the magnitudes of gravitational potential energy to that of kinetic energy of an earth satellite of mass $m$ revolving in any orbit is

A uniform metallic wire of radius $r$ and length $l$ is heated by passing a current through it. The heat produced can be made 8 times if

The mass of one molecule of water is approximately

If the drift velocity of electrons in a copper wire of cross-sectional area $2\,mm^2$ carrying current $I$ is $v_1$ and that in another copper wire of cross-sectional area $1.5\,mm^2$ carrying current $2I$ is $v_2$, then the ratio $v_1 : v_2$ is

When a capacitor of $9\,pF$ is connected to a battery, the electrostatic energy stored in the capacitor is $18 \times 10^{-8}J$. The quantity of charge stored in the capacitor is:

If the instantaneous displacement of a wave is $y = 2(\sin 2\pi t + \sqrt{3}\cos 2\pi t)\,cm$, then the amplitude of the wave in $cm$ is

If the electric potential is given by $V = 3x^2 + 4x$ volt, then the magnitude of the electric field at the point $x = 1m$ is

The equation of a transverse wave in a string, $y = 3\sin 2\pi (25t + 0.4x)$ m. The wavelength of the wave is

If the scalar product of two vectors $x\hat{i} + 3\hat{j} + 2\hat{k}$ and $2\hat{i} - 3\hat{j} + 4\hat{k}$ is 9, then the value of $x$ is:

Among the following the INCORRECT statement is

If a gun fires 25 bullets in one second, each of $10g$ mass with a velocity of $20\,ms^{-1}$, then the recoil force on the gun in $N$ is:

A ball of $200g$ mass moving with a speed of $5\,ms^{-1}$ collides with a wall and bounces back with the same speed. If the force exerted on the wall is $1N$, then the ball is in contact with the wall for:

The moment of inertia of a solid sphere of radius $20cm$ about its diameter is same as that of a solid cylinder of same mass about its axis, then the radius of the cylinder in $cm$ is

A block of $10\,kg$ mass moving on a frictionless surface with speed $5\,ms^{-1}$ compresses a spring by $5cm$ and comes to rest. The force constant of the spring (in $Nm^{-1}$) is:

Which one is not an extensive variable?

There is no change in internal energy of an ideal gas in an

Two capillary tubes of radii in the ratio $1:2$ are dipped in the same liquid. The ratio of heights through which the liquid will rise in the tubes is

Which one of the following materials has the highest modulus of elasticity?

The relative viscosity of blood $\left(\frac{\eta}{\eta_{water}}\right)$ is constant between