List of top Physics Questions asked in COMEDK UGET

With the addition of impurities surface tension of a liquid
Viscosity decreases with increase in temperature is the reason for (i) hot water moving faster than cold water (ii) more viscous oils are used in motor cars during summer than in winter
A star is moving away from the Earth with speed $V$. Change in wavelength $(d\lambda)$ observed on Earth is
$_6C^{14}$ and $7_N^{15}$ are examples of
If the Earth shrinks in its size (radius) mass remaining the same, the value of g on its surface will
Distance between two point charges is increased by 20%. Force of interaction between the charges
A $CE$ amplifier has current gain 50. Load resistance is $4 \, k\Omega$ and input resistance is $500 \, \Omega . 10 \, m V \, AC$ signal is applied. Peak value of output signal is
A calcite crystal is placed over a dot on a paper sheet and the crystal is rotated. On viewing through the calcite one sees
90 dB sound is x times more intense than 40 dB sound, then x is
The square of the resultant of two equal forces acting at a point is equal to three times their product. Angle between them is
Two rods of same area of cross section and lengths, and conductivities $K_1$ and $K_2$ are connected in series. Then, in steady state conductivity of the combination is
A stone dropped from the top of a tower reaches ground in 4 s. Height of the tower is $(g = 10 \, m/s^2)$
Dielectric constant of a metal is
If only 2% of the main current is to be passed through a galvanometer of resistance G, the resistance of shunt should be
$n $ type and $p$ type semiconductors can be obtained by doping pure silicon respectively with
Potential energy of two charges $10 \, nC$ each separated by a distance of 0.09 m in air is
Quality factor of a series $LCR$ circuit decreases from 3 to 2. Resonant frequency is $600 \, Hz$. Change in band width is
Specific resistance of a conductor material increases with
Power factor of a series $LCR $ circuit is
Proton and $\alpha$ particle have the same deBroglie wavelength. Which one is the same for both of them ?
In a $CE$ amplifier $\beta = 50, R_L = 4 \, k\Omega , R_1 = 500 \, \Omega $. Power gain of the amplifier is
Ideal voltmeter connected as shown reads
The resistance of mercury at $4.2 \, K$ is
In Young's double slit experiment,$1^{st}$ dark fringe occurs directly opposite a slit. Wavelength of light used is
Woollen clothes keep the body warm because they