List of top Physics Questions asked in KCET

A gang capacitor is formed by interlocking a number of plates as shown in figure. The distance between the consecutive plates is $0.885\, cm$ and the overlapping area of the plates is $5 \,cm^2$. The capacity of the unit is
A simple pendulum has a length $l$ and the mass of the bob is $m$. The bob is given a charge $q$ coulomb. The pendulum is suspended between the vertical plates of a charged capacitor. If $E$ is electric field strength between the plates, the time period of pendulum is given by
A rectangular vessel when full of water, takes $10$ minutes to be emptied through an orifice in its bottom. How much time will it take to be emptied when half filled with water ?
An unpolarised beam of intensity $I_0$ is incident on a pair of nicols making an angle of $60^\circ$ with each other. The intensity of light emerging from the pair is
A solenoid $1.5\, m$ long and $0.4\, cm$ in diameter possesses $10$ turns per cm length. A current of $5\, A$ flows through it. The magnetic field at the axis inside the solenoid is
If $\lambda_{1}$ and $\lambda_{2}$ are the wavelengths of the first members of the Lyman and Paschen series respectively, then $\lambda_{1}: \lambda_{2}$ is
If $r_1$, and $r_2$ are the radii of the atomic nuclei of mass numbers $64$ and $125$ respectively, then the ratio ($r_1/r_2$) is
A battery of emf $10\, V$ and internal resistance $ 3\,\Omega $ is connected to a resistor. The current in the circuit is $0.5\, A$. The terminal voltage of the battery when the circuit is closed is
The equation of a simple harmonic wave is given by $y = 5= \,\sin \frac {\pi} {2} (100 \,t-x)$ where $x$ and $y$ are in metre and time is in second. The period of the wave in second will be
The width of the diffraction band varies
A tuning fork $A$ produces $4$ beats per second with another tuning fork $B$ of frequency $320\, Hz$. On filing one of the prongs of $A, 4$ beats per second are again heard when sounded with the same fork $B$. Then the frequency of the fork $A$ before filing is
To a fish under water, viewing obliquely a fisherman standing on the bank of a lake, the man looks
The top of the atmosphere is at about $400\, kV$ with respect to the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about $100 \,Vm^{-1}$. Still, we do not get an electric shock as we step out of our house into the open because (assume the house to be a steel cage so that there is no field inside)
Specific rotation of sugar solution is $0.5 \, deg \, m^{2} \, kg^{-1}. \,200 kgm^{-3}$ of impure sugar solution is taken in a sample polarimeter tube of length $20\, cm$ and optical rotation is found to be $19^\circ$. The percentage of purity of sugar is :
White light is incident on one of the refracting surfaces of a prism of angle $5^\circ$. If the refractive indices for red and blue colours are $1.641$ and $1.659$ respectively, the angular separation between these two colours when they emerge out of the prism is
The unit of Stefan's constant is
Vector which is perpendicular to $ a\,\cos \,\theta \,\hat{i}+b\,\sin \,\theta \,\,\hat{j} $ is
Select the right option in the following
If $M$ is the mass of the earth and $R$ its radius, the ratio of the gravitational acceleration and the gravitational constant is :
From the adjacent figure, the correct observation is
A student unable to answer a question on Newton's laws of motion attempts to pull himself up by tugging on his hair. He will not succeed
A tangent Galvanometer has a reduction factor of $1\,A$ and it is placed with the plane of its coil perpendicular to the magnetic meridian. The deflection produced when a current of $1\,A$ is passed through it is
From the figure describing photoelectric effect we may infer correctly that ........
The relationship between the force $F$ and position $x$ of a body is as shown in the figure. The work done in displacing the body from $x = 1\,m$ to $x = 5\,m$ will be
From the top of a tower of two stones, whose masses are in the ratio $1 : 2$ are thrown one straight up with an initial speed $u$ and the second straight down with the same speed $u$. Then, neglecting air resistance