List of top Physics Questions

The ratio of the wavelength of two particles with energy $ E $ and $ 3E $ respectively, is:
The ratio of angular velocity of two satellites at a distance $ r $ and $ 2r $ from the centre of the earth is:
Three identical resistors are connected as triangle ABC. Voltage across AB = 12V. Find the ratio of current through AB to ACB:
The wavelength of body radiation having maximum energy is $ \lambda_m $ at temperature $ T $. If the wavelength of radiation corresponds to maximum energy is $ \frac{\lambda}{3} $, then temperature is:
If Young's modulus and densities are in the ratio 3:2 and 3:1 respectively, the ratio of velocity of sound is:
4 masses are placed at 4 corners of square ABCD. If one mass is removed from the corner B, then the centre of mass lies in the line joining
Find object distance of concave mirror of $ R = 24 \, \text{cm} $ which gives magnification of 3.
Product of $ P $ and $ V $ of an ideal gas related to translational part of internal energy $ E $ as
If the torque on electric dipole placed with $30^\circ$ to electric field is $ \tau $, then what will be the torque if it is placed $45^\circ$ with electric field?
Mean free path is inversely proportional to (n = number density, d = diameter of particle)
Rectangular loop of side $a$ and carrying current $I$ is placed perpendicular to magnetic field. What will be the magnetic moment?
A cylindrical vessel contains 16 kg at 1 atm. A certain amount of substance is taken out so that pressure becomes 0.7 atm. Find the amount taken out (in kg).
Express the final answer to the proper number of significant figures: \[ 18.0 + 11.515 + 13.2 = \ldots \]
3 capacitors of capacitance \( 12 \mu \text{F} \) each is connected in series. If the voltage is 12V, what charge is drawn from the cell?
If \( B = 400\sqrt{2} \sin(\omega t - kx) \), find the peak value of the magnetic field of the electromagnetic wave.
The power dissipated by a particle with constant force and constant acceleration is proportional to the:
Arrange the following in the order of conductivity: Na, Ag, Fe, Cu
The dimension of \( \lambda \times t \) (decay constant \(\lambda\) multiplied by time \(t\)) is:
If fringe width obtained in a YDSE is 1.3mm. If the whole system is dipped in a liquid of refractive index 1.3, then the new fringe width will be:
If a bar magnet is doped into a circular ring placed horizontally, then what change will happen?
Band gap energy of Si is:
If \( \frac{C_p}{C_v} \) is unity for a process, \( PV^{\gamma} = \text{constant} \), then the process is:
The ratio of frequency of the 3rd mode of vibration for the closed organ pipe and the open pipe of length \( L \)?
Which of the following is incorrect?
Three forces are acting on a particle in which \( F_1 \) and \( F_2 \) are perpendicular. If \( F_1 \) is removed, find the acceleration of the particle.