List of top Physics Questions asked in COMEDK UGET

A particle is moving eastward with velocity $5 \, m \, s^{-1}$ In 10 s the velocity changes to $5\, m\, s^{-1}$ northwards. The average acceleration in this time is
In the case of the Bohr atom model, if $E_k$ and $U$ are the kinetic and potential energies of an electron in an orbit then,
If $x =at + bt^2$ where $x$ is measured in m and t ins, thenthe dimension of (b/a) is
A ring rolls down an inclined plane. The ratio of rotational kinetic energy to translational kinetic energy is
A mass of 0.1 kg is hung at the 20 cm mark from a 1 m rod weighing 0.25 kg pivoted at its centre. The rod will not topple if
A particle executes simple harmonic motion with amplitude A. The distance moved by the particle in one oscillation is
The carrier of electromagnetic interaction is
The layer in earth's atmosphere which reflects radio waves from the earth thus, helping radio communication is
The current in a coil changes from 1 mA to 5 mA in 4 ms. ? If the coefficient of self-inductance of the 'coil is 10 mH,. the magnitude of "self-induced" emf is?
LCD stands for
Two point charges $Q_1 = 2 \mu C$ and $ Q_2 = 1 \mu C$ are placed as shown. The coordinates of the point P are (2 cm, 1 cm). The electric intensity vector at P subtends an angle $\theta$ with the positive X-axis. The value of $\theta$ is given by
The ratio of speed of sound in Hydrogen to that in Oxygen at the same temperature is
According to Faraday's law of electromagnetic induction, an emf is induced in a coil if
Assuming $g_{(moon)} = \left( \frac{1}{6}\right) g_{earth}$ and $D_{(moon)} = \left( \frac{1}{4}\right) D_{earth}$ where g and D are. the acceleration due to gravity and diameter respectively, the escape velocity from the moon is
Diffraction effects are more easily detected in the case of sound waves than light waves because
A star $ A $ is 100 times brighter than star $B$. Then $m_B - m_A$ the difference in their apparent magnitudes is
Ratio of radiant energy emitted per unit area per second by two stars is 16 : 81. The ratio of wavelengths at which intensity of radiant energy is maximum is given by?
Water drops fall at regular intervals from a tap 5 m above the ground. The third drop is leaving the tap at an instant when the first drop touches the ground. The height, in m, of the second drop above the ground at that instant is (Take g = 10 m s$^{-2}$)
Two planets of radii $R_1$ and $R_2$ have the same density. The ratio of the acceleration due to gravity on these planets is
Two identical rods of length L, mass M are riveted at right angles at their mid points Moment of inertia of the system about the perpendicular axis passing through the centre is
Ratio of maximum to minimum intensities is
Two charges $4q$ and $q$ are placed $3x$ apart in air $A$ charge $Q$ is placed at a point on the line joining so that the systein of these charges remains in equilibrium. Then, the distance of $Q$ from $4q$ and the value of $Q$ are
An unpolarized light is incident on a system of two crossed polaroids $A$ and $B$. Now the second polaroid $B$ is rotated by, $30^{\circ} $ towards $A$. Percentage of light transmitted through the system is
A uniform wire of resistance $R$, of the radius $r$ is uniformly drawn until its radius is reduced to $r/ n$, Its new resistance is
Among the following, the correct graphical representation of electric intensity as a function of distance from the centre of a uniformly charged conducting sphere is shown in