List of top Physics Questions

Which of the following expressions is that of a simple harmonic progressive wave?
A point initially at rest moves along $x$-axis. Its acceleration varies with time as $ a=(6t+5)\,m/s^{2}$ . If it starts from origin, the distance covered in $2\, s$ is
A solid sphere rolls down on two different inclined planes of same height, but of different inclinations. In both cases
Use of eddy currents is done in the following except
Two friends $A$ and $B$ are waiting for another friend for tea. A took the tea in a cup and mixed the cold milk and then waits. B took the tea in the cup and then mixed the cold milk when the friend comes. Then the tea will be hotter in the cup of
Two equal drops of water are falling through air with a steady velocity $v$. If the drops coalesced what will be the new velocity?
The path of an electron in a uniform magnetic field may be
A magnetic needle is placed on a cork floating in a still lake in the northern hemisphere. Does the needle together with the cork move towards the north of the lake?
A good lubricant should have
A $60 \,kg$ man stands on a spring scale in the lift. At some instant he finds, scale reading has changed from $60 \,kg$ to $50 \,kg$ for a while and then comes back to the original mark. What should we conclude?
Two identical induction coils each of inductance $L$ joined in series are placed very close to each other such that the winding direction of one is exactly opposite to that of the other, what is net inductance?
A beaker is completely filled with water at $4^{\circ} C$. It will overflow if
If the temperature difference on the two sides of a wall increases from $ 100{}^\circ C $ to $ 200{}^\circ C $ , its thermal conductivity
In the diffraction pattern due to a single slit linear width of the central max will be twice that of slit width $(d)$. The distance between the slit and the screen is
Circularly polarised light is passed through Quarter Wave Plate and emerging light is passed through a rotating analyser. The intensity of emerging light
If the coefficient of static friction between the tyres and road is $0.5$, what is the shortest distance in which an automobile can be stopped when travelling at $72\,km/h$?
Half-lives of two radioactive substances A and B are respectively 20 min and 40 min. Initially the samples of A and B have equal number of nuclei. After 80 min the ratio of remaining number of A and B nuclei is
Compressional wave pulses are sent to the bottom of sea from a ship and the echo is heard after $2 s$. If bulk modulus of elasticity of water is $2 \times 10^{9} \,N / m ^{2}$ and mean temperature is $4^{\circ} C$, the depth of the sea will be
Alternating current is transmitted to take places
The magnetic moment has dimensions of
A particle moving with a uniform acceleration travels $24\, m$ and $64\,m$ in the first two consecutive interval of $4s$ each. Its initial velocity will be
A gas bubble formed from an explosion under water oscillates with a period $T$ proportional to $P^{a} d^{b} E^{c}$, where $P$ is pressure, $d$ is the density of water and $E$ is the total energy of explosion. The value of $a, b, c$ are
A meter stick is held vertically with one end on the floor and is then allowed to fall. Assuming that the end on the floor the stick does not slip, the velocity of the other end when it hits the floor, will be
If the radius of earth of $R$ then the height h at which the value of $g$ becomes one-fourth, will be
A body is projected at such angle that the horizontal range is three times the greatest height. The angle of projection is