List of top Physics Questions asked in JKCET

The distance of closest approach for an alpha nucleus of velocity $ v $ bombarding a stationary heavy nucleus target of charge $ Ze $ is directly proportional to
The angle between the linear momentum and angular momentum of a particle moving along a circle is
Identify the correct statement about a stationary wave
For an ideal step-down transformer, the quantity which is constant for both the coils is
If the ratio of the mechanical energy of a mass whose oscillations are damped to that of its free oscillations is $ e^{-3 t/m} $ , then the ratio of the amplitudes of the damped oscillations to that of free oscillations is
The processes $ 3, 2 $ and $ 1 $ represent the respective isobaric, isothermal and adiabatic expansion of one mole of a gas initially at a pressure $ P $ from volume $ V $ to $ 2V $ . The work done is
If the coefficient of linear expansion of a metal is $ 0.00002 \,K^{-1} $ , then the necessary increase in temperature of the metal rod in order to increase its length by $ 2\% $ is
The temperature of source of a Carnot engine of efficiency $ 20\% $ when the heat exhausted is at $ 240 \,K $ is
For an object placed in front of a convex mirror of focal length $ f $ , its image is formed
A metallic wire of cross sectional area $ 4 \, mm^{2} $ carries a current of $ 3.2 \, A $ . If $ 5 \times 10^{26} $ charge carriers flow across the wire per unit volume, then their drift velocity in $ m \,s^{-1} $ is
In a potentiometer, auniform potential gradient of $ 0.8 \,V \,m^{-1} $ is maintained across its $ 10 \,m $ wire. The potential difference across two points on the wire located at $ 0 \,m \,65\, cm $ and $ 2 \,m\, 45 \,cm $ is
The correct statement about electric dipole is
A ball is projected up at an angle $\theta$ with horizontal from the top of a tower with speed $v$. It hits the ground at point $A$ after time $t_{A}$ with speed $v_{A}$ . Now, this ball is projected at same angle and speed from the base of the tower (located at point $P$) and it hits ground at point $B$ after time $t_{B}$ with speed $v_{B}$. Then
A person is standing on a weighing-scale and observes that the reading is $60\,kg$ . He then suddenly jumps up and observes that reading goes to $70\,kg$ . Then his maximum upward acceleration is
A solid sphere is rolling down an inclined plane. Then, the ratio of its translational kinetic energy to its rotational kinetic energy is
In a cyclic process, the change in the internal energy of a system over one complete cycle
In an $n-p-n$ transistor, $p$ is
Consider boiling water converting into steam. Under this condition, the specific heat of water is
A satellite revolves around the earth of radius $R$ in a circular orbit of radius $3R.$ The percentage increase in energy required to lift it to an orbit of radius $5R$ is
Which of the following is correct statement about the magnitude of the acceleration $a$ of the particle executing simple harmonic motion?
Which of the following is incorrect about sky waves?
Assuming density $d$ of a planet to be uniform, we can say that the time period of its artificial satellite is proportional to
The dimension of magnetic flux is
Values for Brewster's angle can be
If the forward bias voltage in a $p-n$ junction diode is decreased, the length of depletion region will