List of top Physics Questions asked in KCET

The temperature of a gas contained in a closed vessel of constant volume increases by $1^\circ$C when the pressure of the gas is increased by $1\%$. The initial temperature of the gas is ..........
Two smalI spheres of masses $M_1 $ and $M_2$ are suspended by weightless insulating threads of lengths $ L_1$ and $ L_2$. The spheres carry charges $Q_1$ and $Q_2$ respectively. The spheres are suspended such that they are in level with one another and the threads are inclined to the vertical at angles of $\theta_1 $ and $\theta_2$ as shown. Which one of the following conditions is essential, if $\theta_1 = \theta_2$ ?
There is a uniform electric field of intensity $E$ which is as shown. How many labelled points have the same electric potential as the fully shaded point?
Magnetic field at the centre of a circular coil of radius $R$ due to current $I$ flowing through it is $B$. The magnetic field at a point along the axis at distance $R$ from the centre is........
Two identical conducting balls $A$ and $B$ have positive charges $q_1$ and $q_2$ respectively but $q_1 \ne q_2$ The balls are brought together so that they touch each other and then kept in their original positions. the force between them is
Two beams of red and violet colours are made to pass separately through a prism of $A = 60^\circ$. In the minimum deviation position, the angle of refraction inside the prism will be
Pick out the correct statement from the following:
In a p-n junction diode notconnected to any circuit
Identify the logic operation performed by the circuit given here.
Which of the following substances has the highest elasticity?
Two simple harmonic motions a re represented by $y_1=5[\sin\,2\pi t+\,\sqrt{3}\,\cos \,2\pi\,t]$ and $y_2=5\sin[2\pi t +\frac{\pi}{4}]$.The ratio of their amplitude is
Two slabs are of the thicknesses $d_1$ and $d_2$ Their thermal conductivities are $K_1 $ and $K_2$ respectively. They are in series. The free ends of the combination of these two slabs are kept at temperatures $\theta_1 $ and $\theta_2$ . Assume $\theta_1 > \theta_2$ .The temperature $ \theta $ of their common junction is.............
An electron is moving in an orbit of a hydrogen atom from which there can be a maximum of six transitions. An electron is moving in an orbit of another hydrogen atom from which there can be a maximum of three transitions. The ratio of the velocity of the electron in these two orbits is
A uniform wire of length $L$, diameter $D$ and density $P$ is stretched under a tension $T$. The correct relation between its fundamental frequency $'f'$ , the length $L$ and the diameter $D$ is ............
When a neutron is disintegrated to give $\beta$-particle, ............
The colloidal solution in which both the dispersed phase and dispersion medium arc liquids called
A convex lens made of glass has focal length $0.15\, m$ in air. If the refractive index of glass is $3/2$, and that of water is $4/3$ the focal length of lens when immersed in water is
A beam of light of wavelength 600 nm from a distant source falls on a single slit I mm wide and the resulting diffraction-pattern is observed on a screen 2m away. The distance between the first dark fringes on either side of the central bright fringe is
For the constructive interference the path difference between the two interfering waves must be equal to
A door of $1.6\, m$ wide requires a force of $1 \,N$ to be applied at the free end to open or close it. The force that is required at a point $0.4\, m$ distant from the hinges for opening or closing the door is
An electric heater rated $220\, V$ and $550\, W$ is connected to $AC$ mains. The current drawn by it is
According to Newton's Corpuscular Theory, the speed of light is
Hydrogen atom from excited state comes to the ground state by emitting a photon of wavelength $\lambda$. If $R$ is the Rydberg constant, the principal quantum number $'n'$ of the excited state is
Sound waves transfer
The magnetic dipole moment of a current loop is independent of