List of top Physics Questions

A gramophone record is revolving with an angular velocity $\omega$. A coin is placed at a distance $r$ from the centre of the record. The static coefficient of friction is $\mu$. The coin will revolve with the record if
The set which represents the isotope, isobar and isotone respectively is
The ratios of the distance traversed, in successive intervals of time by a body, falling from rest, are
The temperature of a gas contained in a closed vessel of constant volume increases by $1^\circ$C when the pressure of the gas is increased by $1\%$. The initial temperature of the gas is ..........
Two smalI spheres of masses $M_1 $ and $M_2$ are suspended by weightless insulating threads of lengths $ L_1$ and $ L_2$. The spheres carry charges $Q_1$ and $Q_2$ respectively. The spheres are suspended such that they are in level with one another and the threads are inclined to the vertical at angles of $\theta_1 $ and $\theta_2$ as shown. Which one of the following conditions is essential, if $\theta_1 = \theta_2$ ?
There is a uniform electric field of intensity $E$ which is as shown. How many labelled points have the same electric potential as the fully shaded point?
For measurement of potential difference, potentiometer is preferred in comparison to voltmeter because
In a parallel plate capacitor, the capacity increases if
Which of the following relation is true?
The equation of a simple harmonic progressive wave is given by $ y = A \,sin \,(100\, \pi t - 3x) $ . Find the distance between $ 2 $ particles having a phase difference of $ \frac{\pi}{3} $ .
The binding energy per nucleon, for nuclei with atomic mass number $A > 100$ decreases with $A$. The nuclear forces are weak for heavier nuclei.
With an increase in temperature, surface tension of liquid (except molten copper and cadmium)
The increase in pressure required to decrease the $ 200 \,L $ volume of a liquid by $ 0.008\% $ in $ kPa $ is (Bulk modulus of the liquid $ = 2100 \,MPa $ is)
For an opaque body coefficient of transmission is
A transformer cannot work on $DC$ supply. $DC$ changes neither in magnitude nor in direction.
Half-life of a radioactive substance is $20$ minute. The time between $20\%$ and $80\%$ decay will be :
The decimal equivalent of the binary number $(11010.101)_2$ is
In Young�s double slit experiment, the fringe width is $\beta$. If the entire arrangement is placed in a liquid of refractive index $n$, the fringe width becomes :
Two solid spheres of same metal but of mass $M$ and $8\,M$ fall simultaneously on a viscous liquid and their terminal velocities are $v$ and $nv$, then value of $n$ is
A ball is projected horizontally with a velocity of $5 \,m/s$ from the top of a building $19.6\, m$ high. How long will the ball take of hit the ground ?
The speed of a projectile at its maximum height is half of its initial speed. The angle of projection is
Radius of gyration of disc of mass 50 g and radius 2.5 cm about an axis passing through its center of gravity and perpendicular to the plane is
If $ 10^{10} $ electrons are acquired by a body every second, the time required for the body to get a total charge of $1 \,C$ will be
A circuit contains a capacitor and inductance each with negligible resistance. The capacitor is initially charged and the charging battery is disconnected. At subsequent time, the charge on the capacitor will
Which of the following is the smallest unit ?