List of top Physics Questions asked in KEAM

The magnetic field at the centre of a current loop of radius \(r\) carrying a current \(I\) is
The energy dissipated per unit time by a wire of resistance \(2R\) connected to a battery of voltage \(2V\) is
The resistance of a wire of length \(l\) and cross sectional area \(A\) is \(R\). The resistance of another wire of the same material of length \(3l\) and cross sectional area \(\frac{A}{3}\) is
The electrostatic force between two point charges at a distance of separation \(d\) is \(F\). If one of the charge is moved away by a distance \(d/2\) then the force between them is

The frequency of the periodic wave for the following figure is 


 

A steel rod of length 1 m is clamped at its middle. If the fundamental frequency of vibrations is 3 kHz, then the speed of sound in steel is
For a diatomic gas molecule the value of \(C_p\) in \(J mol^{-1} K^{-1}\) is \((R = 8.2 J mol^{-1} K^{-1})\)
The speed of water flowing out from the small opening at a depth of \(h\) from the surface of water in a large tank is
Young's modulus and shear modulus can be defined only in
The line that joins any planet to the sun sweeps out equal areas in equal intervals of time. This statement is
If the moment of inertia of a circular disc about its central axis is I, then that for the same disc about its diameter is
The CORRECT statement for a rigid body rotating about a fixed axis with angular velocity \(\omega\) is
A lift with a load of \(1000kg\) is moving up against the frictional force \(2000N\). If the power delivered to it by the operating motor is 36000 W, then the speed of the lift is \((g = 10 m s^{-2})\)
A rain drop of mass \(10g\) falls from a height of \(50m\) from rest. If the loss of energy due to air resistance is \(3J\), then the velocity of the drop on striking the ground is \((g = 10ms^{-2})\)
The area under the curve drawn between the force \(F\) and time \(t\) is
If the forces acting on two bodies of masses \(2kg\) and \(3kg\) are same, then the ratio of their respective accelerations is
A car at rest is accelerated at \(2 ms^{-2}\) for 1 minute and then retarded at \(2 ms^{-2}\) for 1 minute to attain rest. The distance travelled by the car is
If a moving body changes its position from \(x_1\) to \(x_2\) in a time interval \(\Delta t\), then \(\frac{x_2 - x_1}{\Delta t}\) is defined as
The value of one barn in SI unit is
What is the value of the sum of 12.1100 + 18.0 + 1.012 as per the rule of significant figures
If the ratio of the Young's moduli and densities of two rods of different materials are respectively, \(3:2\) and \(3:1\), then the ratio of the velocities of sound in the rods is
Two particles A and B move in concentric circles with radii in the ratio \(2:1\). If for every completion of one circle of A, B completes 5 circles, then the ratio of their respective orbital velocities is
If the heat supplied to an ideal gas is used up entirely to do work on the surrounding, then the process is called
If the period of a simple pendulum of length \(l\) is 5 seconds, then the period of the pendulum of length \(\frac{l}{4}\) is
The product of the pressure P and volume V of an ideal gas in a container is related to the translational part of the internal energy, E as