List of top Physics Questions asked in JKCET

Which logic gate does the following truth table represent?
Which of the following is a semiconductor?
A conducting rod of length $L$ is moving in a uniform magnetic field $(B) $ with a velocity $v$ without rotation. The velocity of the rod is perpendicular to the rod, and the motion of the rod is confined to a plane perpendicular to the magnetic field. What is the induced emf developed across the rod?
Three coplanar, parallel, long straight wires are equally spaced, that is, the distance between each pair of successive wires is the same. The first and the third wire carry currents of $1\,A$ each, in the same direction. What must be the current in the second wire (wire in the middle), so that the other two wires do not feel any net force?
Magnitude of drift velocity per unit electric field is
What fraction of the surface area of earth can be covered to establish communication by one geostationary statellite?
If two bodies stick together after collision and move as a single body, the collision is said to be
Sun is visible a little before the actual sunrise and until a little after the actual sunset. This is due to
If the equivalent capacitance between $P$ and $Q$ of the combination of the capacitors shown in figure below is $ 30\,\mu \,F $ , the capacitor $C$ is
The particle that cannot be accelerated by a cyclotron is
Position-time graph for motion with zero acceleration is
A car moving with a speed of $50 \,km\, h^{-1}$ can be stopped by applying brakes after moving atleast $6 \,m$. If the same car is moving at a speed of $100 \,km\, h^{-1}$ the minimum stopping distance is
The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, will be
A gardener pushes a lawn roller through a distance $ 20\,m $ . If he applies a force of $ 20\,kg\,wt $ in a direction inclined at $ 60^{\circ} $ to the ground, the work done by him is
Magnetic flux of $10 \mu Wb $ is linked with a coil, when a current of 2 mA flows through it. What is the self inductance of the coil?
The current gain of a common base transistor circuit is 0.96. On changing the emitter current by 10.0 mA, the change in the base current will be
Water is used as a coolant in automobile radiators owing to its high
An electric dipole is placed in an uniform electric field with the dipole axis making an angle $ \theta $ with the direction of the electric field. The orientation of the dipole for stable equilibrium is
A TV tower has a height 150 m. What is the total population covered by the TV tower, if the population density around the TV tower is $10^3\, km^{-2}?$ Radius of the earth is $6.4\times10^{6}m$
A radioactive nucleus of mass number $A$, initially at rest, emits an $ \alpha$ - particle with a speed $v$. The recoil speed of the daughter nucleus will be
A constant torque of $ 3.14\,Nm $ is exerted on a pivoted wheel. If the angular acceleration of the wheel is $ 4\pi \,rad/s^{2}, $ then the moment of Inertia of the wheel is
In the case of an inductor
Rainbow is a phenomenon due to
Resultant force acting on a diamagnetic material in a magnetic field is in direction
The masses of the three wires of copper are in the ratio 5 : 3 : 1 and their lengths are in the ratio 1 : 3 : 5. The ratio of their electrical resistances is