List of top Physics Questions asked in KCET

For a projectile motion, the angle between the velocity and acceleration is minimum and acute at

The trajectory of projectile is

The maximum range of a gun on horizontal plane is 16 km. If g = 10ms^-2 , then muzzle velocity of a shell is

A particle starts from rest. Its acceleration ‘a’ versus time ‘t’ is shown in the figure. The maximum speed of the particle will be:

For a body moving along a straight line, the following v-t graph is obtained.

According to the graph, the displacement during

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

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

If the refractive index from air to glass is $\frac{3}{2}$ and that from air to water is $\frac{4}{3}$, then the ratio of focal lengths of a glass lens in water and in air is

Suppose that the electric field amplitude of electromagnetic wave is $E _{0}=120\, NC ^{-1}$ and its frequency if $f =50 \,MHz$. Then which of the following value incorrectly computed ?

Which of the statements are correct with reference to single slit diffraction pattern? (i) Fringes are of unequal width (ii) Fringes are of equal width (iii) Light energy is conserved (iv) Intensities of all bright fringes are equal

The size of the image of an object, which is at infinity, as formed by a convex lens of focal length $30\, cm$ is $2 \, cm .$ If a concave lens of focal length $20 \, cm$ is placed between the convex lens and the image at a distance of $26\, cm$ from the lens, the new size of the image is :

Earth's magnetic field always has a horizontal component except at

To propagate both longitudinal and transverse waves, a material must have

The work function of a metal is $1\, eV$. Light of wavelength $3000 \,?$ is incident on this metal surface. The velocity of emitted photoelectrons will be

The source of electromagnetic wave can be a charge.

What will be the reading in the voltmeter and ammeter of the circuit shown ?

A tightly wound long solenoid has '$n$' turns per unit length, a radius ' $r$ ' and carries a current $I$. A particle having charge ' $q$ ' and mass '$m$' is projected from a point on the axis in a direction perpendicular to the axis. The maximum speed of the particle for which the particle does not strike the solenoid is

In refraction, light waves are bent on passing from one medium to second medium because, in the second medium.

A light beam of intensity $20\, W/cm^2$ is incident normally on a perfectly reflecting surface of sides $25 \,cm \times 15 \,cm$. The momentum imparted to the surface by the light per second is

A long cylindrical wire of radius R carries a uniform current I flowing through it. The variation of magnetic field with distance ‘r’ from the axis of the wire is shown by

A thin uniform rectangular plate of mass 2 kg is placed in X-Y plane as shown in figure. The moment of inertial about x-axis is Ix = 0.2 kg m² and the moment of inertia about y-axis is Iy = 0.3 kg m². The radius of gyration of the plate about the axis passing through O and perpendicular to the plane of the plate is