List of top Physics Questions

The magnetic moment of an electron revolving in an orbit of 0.5 m radius with a velocity of \( 8 \times 10^7 \, \text{m/s} \) is (in \( \text{Am}^2 \))
If an electron moves with a velocity \( v \) in a magnetic field \( B \), the magnetic force on the electron is maximum when the angle between \( v \) and \( B \) is
The angular momentum of the electron revolving in the 2nd orbit is
The flux linked with a coil at any instant is given by \( \Phi = 5t^2 - 25t - 150 \) (in SI units). The emf induced in the coil at \( t = 2 \) s is
A hockey player hits a ball with an impulse of 15 Ns. If time of hit is 0.2 s, the average force exerted by the player on the ball is
If a particle is moving with a momentum of (2 × 1010) h kg·m/s, then the de Broglie wavelength associated with it (in angstrom) is (where h is Planck's constant)
What is the work done to stretch a string?
Moment of inertia of a disc about the axis passing through the center and perpendicular to the plane is \(I_1\). What is the moment of inertia about its diameter?
When a body is dropped from height H, the time taken to reach the ground is T. What is the time taken to reach height H/2 from the ground?
Forces acting on 2 bodies of masses 2kg and 3kg are same. What is the ratio of their acceleration?
Young's modulus and shear modulus are applicable for:
Find the frequency of the waveform shown in the graph.
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.
A lift having mass 1000kg moves upward against a frictional force of 2000N. Power given by motor is 36000W. What is the velocity of the lift?
The dimension of \( \lambda \times t \) (decay constant \(\lambda\) multiplied by time \(t\)) is:
What is the ratio of gyration of ring and disc?
If a p-n junction diode is forward biased, then:
Highest limiting conductance at 298 K is:
Find the pressure on an air bubble of radius \( r \) at a height \( h \) from the surface of the water.
Product of uncertainty in position (\(\Delta x\)) and uncertainty in velocity (\(\Delta v\)) has unit:
Relation between \(C_p\), \(C_v\) and \(R\)
The ratio of frequency of the 3rd mode of vibration for the closed organ pipe and the open pipe of length \( L \)?
If \(T\) and \(n\) are surface tension and coefficient of viscosity, if temperature increases, then:
What is the speed of water flowing through a hole located at a depth \(h\) from the surface of water in a tank?
Arrange the following in the order of conductivity: Na, Ag, Fe, Cu