List of top Physics Questions asked in KCET

A copper rod AB of length l is rotated about end A with a constant angular velocity ω. The electric field at a distance x from the axis of rotation is
To propagate both longitudinal and transverse waves, a material must have
A pendulum oscillates simple harmonically and only if
(I) the sizer of the bob of pendulum is negligible in comparison with the length of the pendulum
(II) the angular amplitude is less than 10°.
A gas mixture contains monoatomic and diatomic molecules of 2 moles each. The mixture has a total internal energy of (symbols have usual meanings)
A number of Carnot engines are operated at identical cold reservoir temperatures (TL). However, their hot reservoir temperatures are kept different. A graph of the efficiency of the engines versus hot reservoir temperature (TH) is plotted. The correct graphical representation is
Which of the following curves represent the variation of coefficient of volume expansion of an ideal gas at constant pressure?
Two capillary tubes P and Q are dipped vertically in water. The height of water level in capillary tube P is \(\frac{2}{3}^{rd}\) of the height in capillary tube Q. The ratio of their diameter is _______.
Two bodies of masses 8 kg are placed at the vertices A and B of an equilateral triangle ABC. A third body of mas 2 kg is placed at the centroid G of the triangle. If AG = BG = CG = 1 m, where should a fourth body of mass 4 kg be placed so that the resultant force on the 2 kg body is zero?
In figure E and Vcm represent the total energy and speed of centre of mass of an object of mass 1kg in pure rolling. The object is :
total energy and speed of centre of mass of an object
A ball hits the floor and rebounds after an inelastic collision. In this case
A 1 kg ball moving at 12 ms-1 collides with a 2 kg ball moving in opposite direction at 24 ms-1. If the coefficient of restitution is \(\frac{2}{3}\), then the velocities after the collision are
A coin placed on a rotating turn table just slips if it is placed at a distance of 4 cm from the centre. If the angular velocity of the turn table is doubled it will just slip at a distance of :
A particle starts from the origin at t = 0s with a velocity of \(10\hat{j}\) ms-1 and move in the x-y plane with a constant acceleration of \((8\hat{i}+2\hat{j})\) ms-2 . At an instant when the x-coordinate of the particle is 16 m, y-coordinate of the particle is:
For a projectile motion, the angle between the velocity and acceleration is minimum and acute at
The trajectory of projectile is
For a body moving along a straight line, the following v-t graph is obtained.
Graph of body moving along a straight line
According to the graph, the displacement during
A particle starts from rest. Its acceleration ‘a’ versus time ‘t’ is shown in the figure. The maximum speed of the particle will be:
Graph of speed of paricle
The maximum range of a gun on horizontal plane is 16 km. If g = 10ms-2 , then muzzle velocity of a shell is
In the Young's double slit experiment a monochromatic source of wavelength $\lambda$ is used. The intensity of light passing through each slit is $I _{0}$. The intensity of light reaching the screen $S _{ C }$ at a point $P$, a distance $X$ from $O$ is given by (Take $d < < D$ )
Eight drops of mercury of equal radii combine to form a big drop. The capacitance of a bigger drop as compared to each smaller drop is
A proton moving with a momentum $P _{1}$ has a kinetic energy $\frac{1}{8}$ th of its rest mass energy. Another light photon having energy equal to the kinetic energy of the possesses a momentum $P _{2} .$ Then the ratio $\frac{ P _{1}- P _{2}}{ P _{1}}$ is equal to
Two thin biconvex lenses have focal lengths $f _{1}$ and $f _{2} .$ A third thin biconcave lens has focal length of $f_{3} .$ If the two biconvex lenses are in contact, the total power of the lenses is $P _{1}$. If the first convex lens is in contact with the third lens, the total power is $P _{2}$. If the second lens is in contact with the third lens, the total power is $P _{3}$ then
A toroid with thick windings of $N$ turns has inner and outer radii $R_{1}$ and $R_{2}$ respectively. If it carries certain steady current I, the variation of the magnetic field due to the toroid with radial distance is correctly graphed in
The resistance of $0.01 \,m \,KCl$ solution at $298\, K$ is $1500\, \Omega$. If the conductivity of $0.01\, m \,KCl$ solution at $298\, K$ is $0.146 \,\times \,10^{-3}\, S \,cm ^{-1} .$ The cell constant of the conductivity cell in $cm ^{-1}$ is
A slit of width 'a' is illuminated by red light of wavelength $6500 ?$. If the first diffraction minimum falls at $30 ?$, then the value of ' $a$ ' is