List of top Physics Questions asked in JKCET

The induced emf in a coil of $10$ Henry inductance in which current varies from $9\,A $ to $4\,A$ in $0.2$,second is
Polonium has a half-life of $140$ days. If we take $20\,g$ of polonium initially then the amount of it that remains after $280$ days is
The transverse nature of electromagnetic waves is proved by which of the following?
The Brewster's law is given by the expression
The position vector of a point $R$ which divides the line joining $ P(6,\,3,-2) $ and $ Q(3,1,-4) $ Q(3,1, - 4) in the ratio $ 2:1 $ externally is
Two identical capacitors are first connected in series and then in parallel. The ratio of equivalent capacitance is
The conservation of angular momentum demands that
The centripetal force is given by the expression
A long straight wire is carrying a current of $ 12\,A $. The magnetic field at a distance of $ 8\,cm$ is $ (\mu _{0}=4\pi \times 10^{-7}\,N/A^{2}) $
Which of the following physical quantity unit is not a fundamental unit?
The net electric force on a charge of $ +3\,\mu C $ at the mid-point on the line joining two charges of magnitude $ +2\,\mu C $ and $ -2\,\mu C $ separated by the distance of $6\,mm, $ is
An electric charge does not have which of hte following properties?
The value of acceleration due to gravity at the surface of earth
Which component of electromagnetic spectrum have maximum wavelength?
According to Bohr model of hydrogen atom, only those orbits are permissible which satisfy the condition
If two slits in Young's experiment are $ 0.4\,mm $ apart and fringe width on a screen $ 200\,cm $ away is $ 2\,mm $ the wavelength of light illuminating the slits is
The velocity-time graph of particle comes out to be a non-linear curve. The motion is
$24$ cells of emf $ 1.5\,V $ each having internal resistance of $1$ ohm are connected to an external resistance of $ 1.5$ ohms . To get maximum current
Newton's second law of motion is
A magnifying glass of focal length $ 5\,cm $ is used to view an object by a person whose smallest distance of distinct vision is $ 25\,cm $ . If he holds the glass close to eye, the magnification is
A $50\,Hz\,AC$ signal is applied in a circuit of inductance of $ (1/\pi )H $ and resistance $ 2100\,\Omega $ The impedance offered by the circuit is
The scalar product of two vectors $ \vec{A} =2\hat{i}+2\hat{j}-\hat{k} $ and $\vec{B} = -\hat{j}+\hat{k}, $ is given by
Uniform circular motion is an example of
A projectile is thrown with initial velocity $v_{0}$ and angle $30^{\circ}$ with the horizontal. If it remains in the air for $1\, s$, what was its initial velocity?
The velocity vector of the motion described by the position vector of a particle, $\vec{r}=\left(2 t \hat{i}+t^{2} \hat{j}\right)$ is given by