List of top Physics Questions asked in COMEDK UGET

90 dB sound is x times more intense than 40 dB sound, then x 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
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
Angular momentum of an electron in an orbit of H atom is proportional to
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
A body when released from the top of a tower of height $h$ reaches the ground in time 1 second. Time in second at which it is a height $ \frac{h}{2}$ above the groun.d is
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
A charge situated at a certain distance along the axis of an electric dipole experience a force $F$. If the distance of the charge from the dipole is doubled, the force acting on it will become
A DC source of $30 \, V$ is connected across two resistors of $200\, \Omega$ each connected in series. A voltmeter of resistance $200 \, \Omega$ is connected across a resistor. It reads
'Raman frequencies' refers to
If $2.2 \, kW$ power is transmitted through a $10 \, W$ line at $22 \, kV$, power loss in the form of heat will be
In Newton ring experiment, monochromatic light is replaced by white light. Then
In a spectrometer experiment, " As wavelength of a spectral line increases, deviation also increases". This is true
In a region a stationary charge does not experience a force. It is certain that in this region
Fine structure of spectral lines is accounted in Sommerfeld atom model by considering