List of top Physics Questions asked in KEAM

When a body is dropped from height H, the time taken to reach the ground is T. What is the time taken to reach height H/2 from the ground?
Find the magnification of a lens having focal length 5 cm (Least distance of distinct vision = 25 cm).
Area under \(F\) and \(t\) graph is?
Which of the following is true in an SHM?
Three forces are acting on a particle in which \( F_1 \) and \( F_2 \) are perpendicular. If \( F_1 \) is removed, find the acceleration of the particle.
Young's modulus and shear modulus are applicable for:
Forces acting on 2 bodies of masses 2kg and 3kg are same. What is the ratio of their acceleration?
Acceleration of the freely falling metal rod in a cycling ring?
To have the same RMS value as that of hydrogen at 30K, what will be the temperature of the oxygen molecule?
If a p-n junction diode is forward biased, then:
What is the ratio of de Broglie wavelength of the particles if their kinetic energy are 0.002 eV and 2 eV respectively?
A guitar string is vibrating in the third harmonic. The number of nodes and antinodes present are:
A block is tied to a string of length 98 cm and is rotated in a horizontal circle. Find the angular velocity if the centripetal acceleration \( a = g \).
The acceleration of a particle varies with time as \( a = 6t \). What is the displacement and velocity of the particle at \( t = 4s \)?
A rod of length 0.5 m moves with a velocity of 3 m/s in a perpendicular magnetic field of strength 2 T. Find the emf induced across its ends.
What is the potential energy of an object of mass \( m \) placed on the surface of the Earth? (Mass of Earth = \( M \), radius of Earth = \( R \))
Electric field lines around a positive charge are directed:
If force is 500 N and instantaneous velocity is 20 m/s, what is the instantaneous power?
What is the dimension of \[ \frac{M B}{K T} \] where \( M \) represents magnetic moment, \( K \) represents the Boltzmann constant, \( B \) represents the magnetic field, and \( T \) represents temperature?
Relation between Azimuthal quantum number and magnetic quantum number
The tennis ball of mass 120 g moving with a velocity of 20 m/s towards gets by a rocket of velocity and the final speed becomes 30 m/s with direction reversed. If the time of contact is 0.01 s, what is the average force acting on the ball?
The center of mass of a rod of length \( l \) is at a distance ______ from one end of the rod.
The temperature of the source and sink of a heat engine are 127°C and 27°C respectively. By how much should the temperature of the source be increased so as to double the efficiency?
Given: \[ \frac{197}{96} X \to \frac{197}{95} Y + Z + V \quad \text{what is Z?} \]
Galvanometer can be converted into a voltmeter by connecting...