List of top Physics Questions asked in KEAM

When an ideal diatomic gas is heated at constant pressue, fraction of heat enerry supplied that increases the internal energy of the gas is
When the temperature of the source of a Carnot engine is at 400 K, its efficiency is 25%. The required increase in temperature of the source to increase the efficiency to 50% is
A process in which there is no flow of heat between the system and surroundings is a/an
Two thermally insulated identical vessels A and B are connected through a stopcock. A contains a gas at STP and B is completely evacuated. If the stopcock is suddenly opened then
According to equation of continuity when a liquid flows through a tube of variable cross section a with variable velocity v, the quantity that remains constant is
When a body is strained, energy stored per unit volume is (Y-Young's modulus)
The TRUE statement is
With the increase of tempemture
When two identical spheres each of radius r are kept in contact with each other, then the force of attraction between the two spheres is proportional to
If the earth shrinks to half of its present size and its mass reduces to half of its actual mass, then the acceleration due to gravity(g) on its surface will be
If T be the time period of a planet around the Sun and d is its mean distance from the Sun, then according to Kepler's third law
When no external torque acts on a rotating system,
Radius of gyration of a solid cylinder of radius R and length L about its long axis of symmetry is
The X and Y coordinates of the three particles of masses m, 2m and 3m are respectively (0,0), (1,0) and (-2,0). The X-coordinate of the centre of mass of the system is
A solid metal ring and a disc of same radius and mass are rotating about their diameters with same angular frequency. The ratio of their respective rotational kinetic energy values is
An object released from certain height h, from the ground rebounds to a height h/4after striking the ground. The fraction of the energy lost by it is
A ball with $10^3J$ of kinetic.energy coflides with a.hodzontally mounted spring. If the maximum compression of the. spring is 50 cm, then the spring constatrt of the spring is
The instantaneous power in terms of force F and instantaneous velocity v is
When a metal spring is elongated within its elastic limit
Area under the force-time graph gives the change in
On a conveyor belt moving with a speed u, sand falls at a constant rate $\frac{dm}{dt}$ where m is the mass of sand. The extra force required to maintain the speed of
Which one of the following statement is INCORRECT?
A wooden block of mass 10 kg is moving with an acceleration of 3ms on a rough floor. If the coefficient of friction is 0.3, then the applied force on it is (g=10ms)
When a body starts from rest and moves with a constant acceleration, the velocity- time graph for its motion is
The stopping distance of a moving vehicle is proportional to the