List of top Physics Questions asked in COMEDK UGET

Potential energy of two charges $10 \, nC$ each separated by a distance of 0.09 m in air is
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
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
Distance between two point charges is increased by 20%. Force of interaction between the charges
Proton and $\alpha$ particle have the same deBroglie wavelength. Which one is the same for both of them ?
A star is moving away from the Earth with speed $V$. Change in wavelength $(d\lambda)$ observed on Earth is
90 dB sound is x times more intense than 40 dB sound, then x is
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
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
If the Earth shrinks in its radius by 4%, mass remaining the same, the value of 'g' on its surface
Angular momentum of an electron in an orbit of H atom is proportional to
A steel ball of mass m falls in a viscous medium with a terminal velocity V. Another steel ball of mass 64m will fall through the same liquid with terminal velocity
A person inside water $n_w = \frac{4}{3} $ sees the 'setting sun' at about
Two point charges are $3\, m$ apart and their combined charge is $8 \mu C$. The force of repulsion between them is $0.012\, N$. Charges are
Formation of Eddy currents has desirable effects in 1. Electromagnetic damping, 2. Transformer 3. Inductothermy
Energy of a charged capacitor is $E$. It is allowed to share its charge with an identical capacitor charged to half its potential. Loss in the energy of the system is
In an interference experiment two parallel vertical slits $S_1$ and $S_2$ are used. A thin glass plate is introduced in the path of light from $S_1$. Then
A slab consists of two plates of different materials of same thickness and having thermal conductivities $K_1$ and $K_2$. The equivalent thermal conductivity of the slab is
Woollen clothes keep the body warm because they
The range of a particle projected at an angle of 15? with the horizontal is 1.5 km. Its range when projected with the same velocity at an angle of 45? with the horizontal is