List of top Physics Questions

The dimension of mutual inductance is (Denote dimension of current as A)
A ball is thrown upwards with a velocity of \(20\,m/s\). Find the maximum height reached \((g=10\,m/s^2)\).
In a Wheatstone Bridge, all four arms have equal resistance of 1 \(\Omega\) each. A battery is connected across the bridge, and a galvanometer is connected between the middle junctions. What is the current flowing through the galvanometer?
A pure inductor of inductance \( 0.1 \, \text{H} \) is connected to an AC source (of rms voltage 220 V and angular frequency 300 Hz). The rms current is
A couple can result in which type of motion:
What happens to a ferromagnetic material when its temperature is raised above Curie temperature?
If \( \vec{F} \) and \( \vec{S} \) represent force and displacement respectively, then which of the following statements is true:
If current through a single circular loop of radius 10 cm produces a magnetic field of \( B \, \text{Tesla} \) at the centre, what is the current through the loop?
Magnitude and direction of acceleration changes for:
Which force holds the nucleons together in the nucleus of the atom?
A body starting from rest moves with a constant acceleration of \( 2 \, \text{m/s}^2 \). What is the distance covered by the body in the interval between 5 s and 6 s?
If the de Broglie wavelength of \( \alpha \)-particle and proton are equal, then the momentum \( P \) and kinetic energy \( E \) are related as:
Two lenses, one of focal length 20 cm and another of power 4D are placed together, what is the effective power of the combination?
Three bulbs of power 10 W, 25 W, and 50 W are connected parallel across a voltage source \( V \). What is the effective power of the combination?
A constant force acts on a body at rest, resulting it to move with constant acceleration. If power relates to time as \( P \propto t^n \), what is the value of \( n \)?
If two planets A and B have their densities in the ratio 2:1 and radii in the ratio 1:2, what will be the ratio of escape velocities from their surfaces?
For an elastic collision
If \( I = 16 \, \text{A} \), electron density \( n = 5 \times 10^{23} \, \text{m}^{-3} \), and \( A = 1 \times 10^{-7} \, \text{m}^2 \), find the drift velocity.
Transformer core is laminated because:
For an elastic collision
Current in a circuit is 0.6 A when an external resistance of \( 3 \, \Omega \) is connected. When the external resistance is changed to \( 6 \, \Omega \), current in the circuit becomes 0.4 A. Find the internal resistance of the cell.
Transformer core is laminated because:
Which of the following statement is correct for EM wave:
At a certain height \( h \) from the surface of Earth, the value of acceleration due to gravity is \( \frac{g}{9} \), where \( g \) is the acceleration due to gravity at the surface. What is the value of \( h \) in terms of the radius of Earth \( R \)?
If a proton is displaced by 5m in an electric field of \(50 \, \text{N/C}\), what is the work done by the electric field?