List of top Physics Questions

Sound waves transfer
The magnetic dipole moment of a current loop is independent of
Near a circular loop of conducting wire as shown in the figure an electron moves along a straight line. The direction of the induced current if any in the loop is
The angle of minimum deviation for an incident light ray on an equilateral prism is equal to its refracting angle. The refractive index of its material is
A graph of pressure versus volume for an ideal gas for different processes is as shown. In the graph curve $OC$ represents
The spectral series of the hydrogen atom that lies in the visible region of the electromagnetic spectrum
The work done by a force acting on a body is as shown in the graph. The total work done in covering an initial distance of $20\,m$ is
The resistance of a wire at $300 \, K$ is found to be $0.3 \, \Omega$. If the temperature co-efficient of resistance of wire is $1.5 \times 10^{-3} K^{-1}$, the temperature at which the resistance becomes $0.6\, \Omega$ is
Three concurrent co-planar forces $1\,N, 2\,N$ and $3\,N$ acting along different directions on a body
In fog, photographs of the objects taken with infra-red radiations are more clear than those obtained during visible light because
The moment of inertia of a circular ring of radius $'r'$ and mass $'M'$ about diameter is
A body of mass $'m'$ moving along a straight line covers half the distance with a speed of $2\, ms^{-1}$. The remaining half of the distance is covered in two equal time intervals with a speed of $3\, ms^{-1}$ and $5\, ms^{-1}$ respectively. The average speed of the particle for the entire journey is
Two solid pieces, one of steel and the other of aluminium when immersed completely in water have equal weights. When the solid pieces arc weighed in air
Ferromagnetic materials used in a transformer must have
In ruby laser, the stimulated emission is due to transition from
A metal wire of length $ l $ area of cross-section A and Young's modulus Y behaves as a spring of spring constant k given by
If energy E, velocity v and time T are taken as fundamental quantities, the dimensional formula for surface tension is
See the electrical circuit shown in this figure. Which of the following equations is a correct equation for it ?
In an experiment of Wheatstone bridge, a null point is obtained at the centre of the bridge wire. When a resistance of $10 \, \Omega $ is connected in one gap, the value of resistance in other gap is
If the acceleration-displacement graph of simple harmonic motion of a particle is given, then the time period of the particle will be
The magnetic Lorentz force experienced by a charge q, entering a magnetic field B with a velocity v is
The magnifying power of telescope is high if
If an electron is revolving around the hydrogen nucleus at a distance of $ 0.1 \,nm $ , what should be its speed ?
If angle of incidence is twice the angle of refraction in a medium of refractive index $ \mu $ , then angle of incidence is
A ray of light is incident at polarising angle such that its deviation is $ 24^{\circ} $ , then angle of incidence is