List of top Physics Questions asked in KEAM

Highest limiting conductance at 298 K is:
Energy dissipated per unit time by a wire of resistance \(2R\) connected to a 2V battery.
Minimum wavelength of Brackett series corresponds to transition from $ n_1 $ to $ n_2 $, where $ n_1 $ and $ n_2 $ are respectively...
If maximum height and range are equal in projectile motion, then $ \tan \theta = ... $:
An ideal Carnot engine has an efficiency of 40 %. The ratio of the temperature of the sink to that of the source is
If a particle is moving with a momentum of (2 × 1010) h kg·m/s, then the de Broglie wavelength associated with it (in angstrom) is (where h is Planck's constant)
The angular momentum of the electron revolving in the 2nd orbit is
In the nuclear process, 1122Na → 1022Ne + e+ + νe, then X is
In a semiconductor crystal, the total number of electrons in the outer shell is 4N . At absolute zero, the number of energy states of valence and conduction band are respectively
The eye defect astigmatism can be corrected by using a
If the frequency of an electromagnetic wave is 2 MHz, then the time period of oscillation of the accelerated charge is
The intensity of a polarized light can be controlled by a second polarizer from
If an electron moves with a velocity \( v \) in a magnetic field \( B \), the magnetic force on the electron is maximum when the angle between \( v \) and \( B \) is
The flux linked with a coil at any instant is given by \( \Phi = 5t^2 - 25t - 150 \) (in SI units). The emf induced in the coil at \( t = 2 \) s is
When a current of 2 A flows through a wire for 2.5 s, the amount of heat liberated is 20 J. The resistance of the wire is
For the oscillations of a spring with spring constant k, the false statement is
The energy density of the electric field \( 2 \, \text{V/m} \) in a capacitor \( C \) is \( \varepsilon_0 \) is the permittivity of free space
A carbon resistor has a tolerance of 20\%. As per the colour codes of resistors, the last band in that resistor is
The magnetic moment of an electron revolving in an orbit of 0.5 m radius with a velocity of \( 8 \times 10^7 \, \text{m/s} \) is (in \( \text{Am}^2 \))
In dielectrics, polarization is the dipole moment per unit
If the amplitude of the wave \( y = 3\sin(3x - 5t) + A\cos(3x - 5t) \) m is 5 m, the value of A is
For smaller deformations, stress is directly proportional to the strain for any material. Then the constant of proportionality is called as its
An astronaut experiences weightlessness in space satellite because
Angular momentum of a particle will not be zero, if the
Which one of the following principles helps to explain the flow of blood in an artery?