List of top Physics Questions asked in JKCET

An intrinsic semiconductor at $0\,K$ temperature behaves like
The moment of inertia of a circular ring of mass $1\,kg $ about an axis passing through its centre and perpendicular to its plane is $4\, kg-m^{2}$ . The diameter of the ring is
If $g$ is the acceleration due to gravity on the surface of earth, its value at a height equal to double the radius of earth is
The de-Broglie wavelength associated with a particle moving with momentum $(p)$ and mass $(m)$ is
Colours in thin films are due to
Two vectors are given by $\vec{A}=3 \hat{i}+\hat{j}+3 \hat{k}$ and $\vec{B}=3 \hat{i}+5 \hat{j}-2 \hat{k}$. Find the third vector $\vec{C}$, if $\vec{A}+3 \vec{B}-\vec{C}=\vec{0}$.
The motion of the centre of mass is the result of
From the top of a tower a body $A$ is projected vertically up, another body $B$ is horizontally thrown and a third body $C$ is thrown vertically down with same velocity. Then
The only mechanical quantity which has negative dimension of mass is
Electric potential at the centre of a charged hollow metal sphere is
A particle executes SHM with a period of $ 8\,s $ and amplitude $ 4\,cm $ . Its maximum speed in $cm/s$, is
A long magnet is cut into two equal parts, such that the length of each half is same as that of original magnet. If the period of original magnet is $T$, the period of new magnet is
The coordinates of a moving particle at any time $t$ are given by $x=\alpha t^{3}$ and $y=\beta t^{3}$. The speed of the particle at time $t$ is given by
In breakdown region, a Zener diode behaves as a
Two unlike charges of the same magnitude $Q$ are placed at a distance $d$. The intensity of the electric field at the middle point in the line joining the two charges
A heavy uniform rod is hanging vertically from a fixed support. It is stretched by its own weight. The diameter of the rod is
A ball is released from the top of a tower. The ratio of work done by force of gravity in first, second and third second of the motion of the ball is
A particular force $(F)$ applied on a wire increases its length by $2 \times 10^{-3} m$. To increase the wire's length by $4 \times 10^{-3} m$ the applied force will be
Two free parallel wires carrying currents in the opposite directions
The escape velocity of a body from the earth is $v_{e}$ . If the radius of earth contracts to $ \frac{1}{4}th $ of its value, keeping the mass of the earth constant, the escape velocity will be
Work done in converting one gram of ice at $ -10^{\circ}C $ into steam at $100^{\circ}C $ is
A body of mass $10\, kg$ is acted upon by two forces each of magnitude $10\, N$ making an angle of $60^{\circ}$ with each other. Find the net acceleration of the body.
The least angle of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is $ 1.5 $ . Then the angle of prism is
The time period of a freely suspended bar magnet in a field is $2\, \sec$. It is cut into two equal parts along its axis, (hen the time period is
A body is moving with uniform acceleration. covers $200\, m$ in the first $2\, s$ and $220\, m$ in the next $4\, s$. Find the velocity in $m / s$ after $7\, s$.