List of top Physics Questions asked in JKCET

In AC circuit Ohm's law is applicable for
The shortest wavelength of $X$-rays coming from an $X$-ray tube depends on the
In Young's double slit experiment, the fringe width with light of wavelength $6000 \,?$ is $3 \,mm$. The fringe width, when the wavelength of light is changed to $4000 \,?$ is
The correct vector relation between linear velocity $ \vec{v} $ and angular velocity $ \vec{\omega } $ in rigid body dynamics is ( where $ \vec{r} $ is the position vector)
The maximum range of a projectile is $ 100\,m $ . The maximum height reached by it is
When the cold and hot junctions of a thermocouple are interchanged, the thermo emf
Magnetic field at the centre of a coil in the form of a square of side $ 2\,cm $ carrying a current of $ 1.414\,A $ is
A uniformly wound coil of self-inductance $ 1.2\times 10^{-4}H $ and resistance $ 3\,\Omega $ . is broken up into two identical coils. These coils are then connected parallel across a $ 6\,V $ battery of negligible resistance. The time constant for the current in the circuit is (neglect mutual inductance)
A body is projected up from the surface of the earth with a velocity equal to $( \frac{3}{4}th )$ of its escape velocity. If $R$ be the radius of earth, the height it reaches is
When air is replaced by a dielectric medium of constant $K$. The maximum force of attraction between two charges separated by a distance:
If the force acting on a body is inversely proportional to its speed, then its kinetic energy is
In inelastic collision
The angle of incidence of light is equal to Brewster's angle, then (A) reflected ray is perpendicular to refracted ray (B) refracted ray is parallel to reflected ray (C) reflected light is polarized having its electric vector in plane of incidence (D) refracted light is polarized
A sphere of radius $R$ is gently dropped into liquid of viscosity $ \eta $ in a vertical uniform tube. It attains a terminal velocity $v$. Another sphere of radius $2\,R$ when dropped into the same liquid, will attain its terminal velocity
In L-C-R series circuit the resonance condition in terms of capacitive reactance ($X_C$) and inductive reactance ($ X_L)$ is
For a gas molecule with $6$ degrees of freedom the law of equipartition of energy gives the following relation between the molecular specific heat $(C_{V})$ and gas constant $(R)$
On bombardment of $U^{235}$ by slow neutrons, $200\, MeV$ energy is released. If the power output of atomic reactor is $1.6\, M\, W$, then the rate of fission will be
The area under the displacement-force curve gives
A solid cylinder is rolling down on an inclined plane of angle $ \theta , $ The coefficient of static friction between the plane and cylinder is $ \mu _{s}$ . Then condition for the cylinder not to slip is
To convert a moving coil galvanometer $(MCG)$ into a voltmeter
The magnetic susceptibility of paramagnetic materials is
The average kinetic energy of a gas molecule is
The net magnetic flux through any closed surface, kept in a magnetic field is
Consider a thin spherical shell of radius $R$ consisting of uniform surface charge density $\sigma$ The electric field at a point of distance $x$ from its centre and outside the shell is
According to Lenz's law of electromagnetic induction