List of top Physics Questions asked in JKCET

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
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?
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 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
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
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
Kirchhoff's $1^{st}$ law for analysis of current at a junction in a circuit is based on
The unit of physical quantity obtained integral of electric field is
Charge $q_2$ of mass m revolves around a stationary charge $q_1$ in a circular orbit of radius r. The orbital periodic time of $ q_2 $ would be
There exists an electric field of 1 N/C along $Y$ direction. The flux passing through the square of 1 m placed in $XY$ plane inside the electric field is
A hollow metal sphere of radius 10 cm is charged such that the potential on its surface becomes 80 V. The potential at the centre of the sphere is
Charges $5 \mu C$ and $10 \mu C$ are placed 1 m apart. Work done to bring these charges at a distance 0.5 m from each other is $(k = 9\times 10^9 SI)$
A microscope is focussed on an ink mark on the top of a table. lf we place a glass slab of 3 cm thick on it, how should the microscope be moved to focus the ink spot again? The refractive index of glass is 1.5
A $100$ turn closely wound circular coil of radius $ 10\,cm $ carries a current of $ 3.2\,A $ . The magnetic moment of the coil is, approximately
The steady state current through the battery in the circuit given below is
Ampere's circuital law is equivalent to
A particle is thrown vertically up with a certain velocity. Assuming the air resistance to be negligible, which one of the following represents the velocity (along $y$-axis) time (along $x$-axis) graph for the entire motion of the particle till it reaches back to the ground
Assuming that the earth is a sphere of radius $R_{E}$ with uniform density, the distance from its centre at which the acceleration due to gravity is equal to $ \frac{g}{3} $ ($g$ = the acceleration due to gravity on the surface of earth) is
An object placed on an inclined plane starts sliding when the angle of incline becomes $30^{\circ}$. The coefficient of static friction between the object and the plane is
An object is projected so that its horizontal range $R$ is maximum. If the maximum height attained by the object is $H$, then the ratio of $R/H$ is
The elastic energy stored per unit volume in a stretched wire is