List of top Physics Questions asked in JKCET

Which of the following cannot be speed-time graph ?
Heater coil $A$ takes $t_1 $ second to boil certain quantity of water. Heater coil $B$ takes $t_2 $ second to boil same quantity of water. If $A$ and $B$ are connected in series, the time taken to boil the same quantity of water by the combination is
The resistance of an ideal voltmeter is
When a wave undergoes refraction
The velocity of an electromagnetic wave in vacuum can be changed by changing
A cricket ball of mass $0.5\, kg$ strikes a cricket bat normally with a velocity of $20\, ms ^{-1}$ and rebounds with velocity of $10\, ms ^{-1}$. The impulse of the force exerted by the ball on the bat is
In a moving coil galvanometer, to make the field radial
Electric flux emanating through a surface element $ \overrightarrow{ds}=5\hat{i} $ placed in an electric field $ \vec{E}=4\hat{i}+4\hat{j}+4\hat{k} $ is
A particle is executing linear simple harmonic motion. The fraction of the total energy that is potential, when its displacement is $ \frac{1}{4} $ of the amplitude is
Energy stored per unit volume of a parallel plate capacitor having plate area $A$ and plate separation d when charged to a potential of $V$ volts is (air space in between the plates)
The working principle of rocket propulsion is conservation of
The nuclear force
The relation connecting magnetic susceptibility $ \chi_{m} $ and relative permeability $ \mu _{r} $ is
The average power dissipated in a pure capacitance $AC$ circuit is
In a transistor, the base is
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: