List of top Questions asked in COMEDK UGET- 2021

When two bodies collide with each other such that their kinetic energy remains constant, their collision is said to be
In a detector, the output circuit consists of \( R = 10 \, \text{k}\Omega \) and \( C = 100 \, \text{pF} \). The frequency of carrier signal it can detect is:
According to Pascal’s law, pressure in a fluid at rest is the same at all points, if
Newton’s second law of rotational motion of a system of particles having angular momentum \( L \) is given by
If an electron in hydrogen atom jumps from an orbit of level \( n = 3 \) to an orbit at level \( n = 2 \), emitted radiation has a frequency of
\( (R = \text{Rydberg’s constant}, \ c = \text{speed of light}) \)
Within the elastic limit, the corresponding stress is known as
A wire is stretched to double of its length. The strain is
Kepler’s second law of planetary motion corresponds to
A constant potential energy of a satellite is given as \[ PE = r \cdot KE \] where PE = potential energy and KE = kinetic energy. The value of \( r \) will be
A long solenoid has 20 turns cm\(^{-1}\). The current necessary to produce a magnetic field of 20 mT inside the solenoid is approximately
The resistance of a wire is \( R \) ohm. If it is melted and stretched to \( n \) times its original length, its new resistance will be
An unpolarised beam of intensity \( I_0 \) is incident on a pair of nicols making an angle of \( 60^\circ \) with each other. The intensity of light emerging from the pair is
The collision of the molecules of an ideal gas is taken as
The average energy associated with a monoatomic molecule is
Find the logic gate, when both the inputs are high the output is low and vice-versa.
What is the minimum band-gap of the LED diode?
If frequencies are \( (v - 1) \) and \( (v + 2) \), then find the value of beats.
The velocity of the proton is one-fourth the velocity of the electron. What is the ratio of the de-Broglie wavelength of an electron to that of a proton?
For an ideal gas, coefficient of volume expansion is given by
Two particles of masses \( m_1 = m \), \( m_2 = 2m \) and charges \( q_1 = q \), \( q_2 = 2q \) entered into uniform magnetic field. Find \( \frac{F_1}{F_2} \) (force ratio).
Work done in moving a charge of 25 C is 50 J. Calculate the potential difference between two points.
The correct arrangement in increasing order of wavelength of X-rays, UV rays, and microwaves is
Two converging lenses of focal length 20 cm and 40 cm are placed in contact. The effective power of the combination is
The formula of capacitative reactance is
The displacement \( x \) of a particle varies with time \( t \), \( x = ae^{-pt} + be^{qt} \), where \( a, b, p, q \) are positive constants. The velocity of the particle will