List of top Physics Questions asked in COMEDK UGET

The ratio of forces between two point charges in the two cases when their separation is halved and when it is doubled, is
To increase the angular width of interference fringes
A charge $Q$ is to be divided into two parts, $q$ and $(Q- q)$, such that force between them is maximum. Then
In Young's double slit experiment, intensity at a bright fringe is $I_0$. One of the slits is closed. Intensity at the same position is
In an interference experiment, when a glass plate of refractive index 1.5 is introduced in the path of one of the beams; fringes are displaced by $x$. When the glass plate is replaced by another transparent plate of same thickness, shift in the fringe is $ \frac{3}{2} x .$ Refractive index of $2^{nd}$ transparent plate is
An object radiates at temperature $127^{\circ} C$. Temperature. at which radiates 16 times more is
$A, B$ and $C$ are three voltmeters of resistances $4000 \, \Omega , 6000 \Omega$ and $12000 \Omega$. When a potential difference? is applied between $X$ and $Y$, voltmeter readings are $V_A, V_B$ and $V_C$. Then
A train moving with a speed of 36 kmph takes 14 s to cross a bridge of length 100 m. The length of the train is
Escape velocity from Earth is about 11 km/s. The escape velocity from a planet, 4 times the size of the Earth with same mean density is
Force per unit length between long parallel wires in the circuit is $3.6 \times 10^{-3} \, N \, m^{-1}$. Resistance of the circuit is
The kinetic energy of the photoelectrons increases by $0.52 \, eV$ when the wavelength of incident light is changed from $500 \, nm$ to another wavelength which is approximately
The capacitance of the Earth considered as a conducting sphere of radius $6408 \, km$ is
Two points separated by a distance of 0.1 mm can just be observed using a microscope when light $\lambda = 600\: nm$ is used. If light of wavelength 480 nm is used, this limit of resolution becomes
The speed of electromagnetic radiation in vacuum
The resistance of a metallic conductor increases with temperature because
In the diffraction pattern due to a single slit linear width of the central max will be twice that of slit width $(d)$. The distance between the slit and the screen is
Circularly polarised light is passed through Quarter Wave Plate and emerging light is passed through a rotating analyser. The intensity of emerging light
Expansion of the Universe is accounted by
The most stable particle in Baryon group is
A particle is projected with velocity 100 mis at 30?. Time of flight is
A constant force acts on two different masses independently producing accelerations $a_1$ and $a_2$. When the same force acts on their combined mass, the acceleration produced is
Two spherical black bodies of radii $r_1$ and $r_2$ at temperatures $T_1$ and $T_2$ respectively, radiate same power. Then $\frac{r_1}{ r_2}$ must be equal to
Electric intensity due to an electric dipole varies with distance $r$ as $E \propto r^n$ where n is
Force of attraction between two parallel current-carrying conductors is $F$ newton per meter. Current through each of them is doubled and reversed. New force in $N/m$ between these conductors is
The magnitude of the magnetic force on a charge is zero when