List of top Physics Questions asked in KCET

A charge particle of mass 'm' and charge 'q' is released from rest in an uniform electric field 'E'. Neglecting the effect of gravity, the kinetic energy of the charged particle after 't' second is 

A metallic rod breaks when strain produced is 0.2%. The Young's Modulus of the material is 7 x 109 N/m2 . The area of cross section to support a load of 104 N is

The centre of mass of an extended body on the surface of the earth and its centre of gravity

A smooth chain of length 2 m is kept on the table such that its length of 60 cm hangs freely from the edge of the table . The total mass of the chain is 4 kg. The work done in pulling the entire chain on the table is. ( Take g = 10 m/s2)

"Heat cannot itself flow from a body at lower temperature to a body at higher temperature ". This statement corresponds to

A tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical uniform electrical field of strength \(\frac{81}{7}\pi\) x 105 V/m.When the field is switched off, the drop is observed to fall with terminal velocity 2 x 10-3 m/s. Here g = 9.8 m/s2, viscosity of air is 1.8 x 10-5 N/m2 and the density of the oil is 900 kg/m3. The magnitude of 'q' is 

A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s-1. A bob is suspended from the roof of the car by a light wire of length 1.0 m. The angle made by the wire with the vertical is (in radian)

Two objects are projected at an angle θ° and (90-θ)°, to the horizontal with the same speed. The ratio of their maximum vertical height is

The displacement 'x' (in metre) of a particle of mass 'm' ( in kg) moving in one dimension under the action of force, is related to time 't' ( in sec) by, t = √x+3. The displacement of the particle when its velocity is zero, will be

The vernier scale of travelling microscope has 50 divisions which coincides with 49 main scale division. If each main scale division is 0.5 mm, then the least count of the microscope is

Two masses of 5 kg and 3 kg are suspended with the help of massless inextensible string as shown in figure . When whole system is going upwards with acceleration \(2 m/s^2\) . The value of T1 is ( use \(g = 9.8 m/s^2\))
Two masses of 5 kg and 3 kg
The forbidden energy gap for 'Ge' crystal at '0' K is
The resistivity of semiconductor at room temperature is between

Which of the following radiations is deflected by electric field?

A nuclear reactor delivers a power of \(10^9\) W, the amount of fuel consumed by the reactor in one hour is
A metallic rod of mass per unit length 0.5 kg m-1 is lying horizontally on smooth inclined plane which makes an angle of 30 degree with the horizontal. A magnetic field of strength 0.25 T is acting on it in the vertical direction. When a current I is flowing through it, the rod is not allowed to slide down. the quantity of current required to keep the road stationary is

Which logic gate is represented by the following combination of logic gates ?
Logic gate

The radius of hydrogen atom in the ground state is 0.53 Å .After collision with an electron it is found to have a radius of 2.1 Å, the principal quantum number 'n' of the state of the atom is 

The de - Broglie wavelength of a particle of kinetic energy 'K' is \(\lambda\), the wavelength of the particle if its kinetic energy is

The kinetic energy of photoelectrons increases by 0.52 eV when the wavelength of incident light is changed from 500 nm to another web length which is approximately

In a photoelectric experiment, if both the intensity and frequency of the incident light are doubled then the saturation photo electric current

Binding energy of Nitrogen Molecule 147N . Given m (147N) = 14.00307 a.m.u

An electron is revolving in its Bohr orbit having Bohr radius of 0.529 Å, then the radius of third orbit is

In accordance with the bohr's model the quantum number that characterises the earth revolution around the sun in an orbit of radius 1.5 x 1011 m with orbital speed 3 x 104 m/s is [given mass of the earth = 6 x 1024 kg]

The fringe width for red colour as compare to that for violet colour is approximately