List of top Physics Questions

In a given process of an ideal gas, $dW \,= \,0$ and $dQ < 0$. Then for the gas
p-V plots for two gases during adiabatic processes are shown in the figure. Plots 1 and 2 should correspond respectively to
The binding energy per nucleon is maximum in the case of :
A luminous object is placed at a distance of 30 cm from the convex lens of focal length 20 cm. On the other side of the lens, at what distance from the lens a convex mirror of radius of curvature 10 cm be placed in order to have an upright image of the object coincident with it;
A radioactive element $ _{90}{{X}^{238}} $ decays into $ _{83}{{\Upsilon }^{222}}. $ The number of P-particle emitted are:
220 V, 50 Hz AC source is connected to an inductance of 0.2 H and a resistance of 20 ohm in series. What is the current in the circuit:
A body is thrown with a velocity of 9.8 m/s making an angle of $ 30{}^\circ $ with the horizontal. It will hit the ground after a time:
A small satellite is revolving near earths surface. Its orbital velocity will be nearly:
According to Newton, the viscous force acting between liquid layers of area A and velocity gradient $ \frac{\Delta \upsilon }{\Delta z} $ is given by $ F=\eta A\frac{\Delta \upsilon }{\Delta z} $ where $ \eta $ is a constant called coefficient of viscosity. The dimension of $ \eta $ are:
The kinetic energy $k$ of a particle moving along a circle of radius $R$ depends on the distance covered. It is given as $KE = as ^{2}$, where a is a constant. The force acting on the particle is
The maximum and minimum distance of a comet from the sun are $ 8\times 10^{12}m$ and $ 1.6\times 10^{12}m$ . If its velocity when nearest to the sun is 60 m/s, what will be its velocity in m/s when farthest?
For a gas $ \frac{R}{{{C}_{\upsilon }}}=0.67. $ This gas is made up of molecules which are:
Two equal negative charges $-q$ each are fixed at points $(0, -a)$ and $(0,a)$ on $y-axis$. A positive Charge $Q$ is released from rest at the point $(2a, 0)$ on the $x-axis$. The charge $Q$ will
The core of a transformer is laminated to reduce
An aluminium ring B faces an electromagnet A.The current I through A can be altered
Which one among the following shows particle nature of light?
If the tension and diameter of a sonometer wire of fundamental frequency n is doubled and density is halved then its fundamental frequency will become
A child is sitting on a swing. Its minimum and maximum heights from the ground 0.75 m and 2 m respectively, its maximum speed will be
The relative permeability is represented by $\mu_r$ and the susceptibility by $\varkappa$ for a magnetic substance. Then for a paramagnetic substance
Two bulbs of  \((40W,\ 200V)\) and \((100 W,\ 200V)\). Then correct relation for their resistance:
To find out degree of freedom, the correct expression is:
A man is slipping on a frictionless inclined plane & a bag falls down from the same height. Then the speed of both is related as:

Motion of a particle is given by equation \(S=(3t^3+7t^2+14t+8)\ m\), The value of acceleration of the particle at \(t=1 \ sec\) is:

Two projectiles of same mass and with same velocity are thrown at an angle \(60º\) & \(30º\) with the horizontal, then which quantity will remain same:

The width of river is 1 km. The velocity of boat is 5 km/hr. The boat covered the width of river with shortest will possible path in 15 min. Then the velocity of river stream is: