List of top Physics Questions asked in COMEDK UGET

The gases carbon monoxide (CO) and nitrogen at the same temperature have kinetic energies $ E_1 $ and $ E_2 $, respectively. Then,

A gas is taken through the cycle $ A \to B \to C \to A $, as shown in the figure. What is the net work done by the gas?

In the figure, pendulum bob on the left side is pulled aside to a height $ h $ from its initial position. After it is released, it collides with the right pendulum bob at rest, which is of the same mass. After the collision, the two bobs stick together and rise to a height

Two wires of the same material having radius in ratio 2 : 1 and lengths in ratio 1 : 2. If the same force is applied on them, then the ratio of their change in length will be
A thin circular ring of mass $ M $ and radius $ R $ rotates about an axis through its centre and perpendicular to its plane, with a constant angular velocity $ \omega $. Four small spheres each of mass $ m $ (negligible radius) are kept gently to the opposite ends of two mutually perpendicular diameters of the ring. The new angular velocity of the ring will be
One end of the string of length $ l $ is connected to a particle of mass $ m $ and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in a circle with speed $ v $, the net force on the particle (directed towards the center) will be (T represents the tension in the string)
A transistor is connected in CE configuration. The collector supply is 10 V and the voltage drop across a resistor of 1000 $ \Omega $ in the collector circuit is 0.5 V. If the current gain factor is 0.96, then the base current is
A particle is projected at an angle $30^\circ$ with horizontal having kinetic energy $K$. The kinetic energy of the particle at the highest point is.
The ratio of amplitude of magnetic field to the amplitude of electric field of an electromagnetic wave propagating in vacuum is
A capacitor of capacity 2 $ \mu F $ is charged up to a potential 14 V and then connected in parallel to an uncharged capacitor of capacity 5 $ \mu F $. The final potential difference across each capacitor will be
The mass density of a nucleus varies with mass number $ A $ as
The phase difference between displacement and velocity of a particle in simple harmonic motion is
The mean energy per molecule for a diatomic gas is

An air bubble in water ($ \mu = \frac{4}{3} $) is shown in the figure. The apparent depth of the image of the bubble in a plane mirror viewed by the observer is.

There are two identical containers \(C_1\) and \(C_2\) containing identical gases. Gas in \(C_1\) is reduced to half of its original volume adiabatically, while the gas in container \(C_2\) is also reduced to half of its initial volume isothermally. Find the ratio of final pressure in these containers. \(\gamma\) be the adiabatic constant)
During the phenomenon of resonance

A source of sound emits sound waves at frequency \( f_0 \). It is moving towards an observer with fixed speed \( v_s \) (\( v_s < v \), where \( v \) is the speed of sound in air). If the observers were to move towards the source with speed \( v_0 \), one of the following two graphs (A and B) will give the correct variation of the frequency \( f \) heard by the observer as \( v_0 \) changes.

A plane glass mirror of thickness 3 cm of material of \( \mu = \frac{3}{2} \) is silvered on the black surface. When a point object is placed 9 cm from the front surface of the mirror, then the position of the brightest image from the front surface is:

An ideal gas is taken through the cycle \( A \to B \to C \to A \), as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process \( C \to A \) is 

A series L-C-R circuit is connected to an AC source of 220V and 50 Hz shown in figure. If the readings of the three voltmeters \( V_1, V_2, \) and \( V_3 \) are 65V, 415V, and 204V respectively, the value of inductance and capacitance will be 

The displacement \( x \) of a particle in a straight line motion is given by \( x = 1 - t - t^2 \). The correct representation of the motion is
Which of the following diagram represents the variation of the electric field with distance \( r \) from the centre of a uniformly charged non-conducting sphere of radius \( R \)?

From the following \( p-V \) diagram, an ideal gas undergoing a change of state from A to B. Four different processes I, II, III, and IV as shown in the figure may lead to the same change of state. 


A regular hexagon of side \( m \), which is a wire of length 24 m, is coiled on that hexagon. If current in hexagon is \( I \), then the magnetic moment is 

Which of the following gate gives the similar output as the output of the circuit diagram shown in the figure?