List of top Physics Questions asked in COMEDK UGET

An object radiates at temperature $127^{\circ} C$. Temperature. at which radiates 16 times more is
A spring balance carries a load. When the load is pulled aside so that the balance makes an angle of $30^{\circ}$ with the vertical, the balance reads $4 \, kg\, wt$. The mass of the load is
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
Electric intensity due to an electric dipole varies with distance $r$ as $E \propto r^n$ where n is
Expansion of the Universe is accounted by
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
A particle is projected with velocity 100 mis at 30?. Time of flight 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
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
The magnitude of the magnetic force on a charge is zero when
The most stable particle in Baryon group is
A wire of resistance 5 ohms is stretched such that longitudinal strain is $200 \%$.The new resistance in ohms is
A slit of width 0.1 mm is illuminated normally d by light of $\lambda = 5000 \mathring A $. Diffraction bands are observed on a screen, 1 m away from the slit. Third dark band is at a distance x from the central maximum. x is approximately
At the instant, when potentiometer is balanced, current
A conducting sphere of radius R carrying charge +Q is connected to an uncharged conducting sphere of radius 2R. The charge that flows between them is
Lateral shift produced by a glass slab is X. When the slab is immersed in a liquid, for the same incident ray lateral shift produced will be
In Sommerfeld's atomic model, corres ponding to principal quantum number $n = 3$, there will be
Diameter of $8^{th}$ dark ring in Newton's rings system viewed normally in reflected light of wavelength $5000 \mathring A $ is 4 mm. Radius of curvature of convex surface in contact with the glass plate is
When a thin transparent plate of refractive index 1.5 is introduced in the path of one of the interfering beams, 20 fringes shift. If the plate is replaced by another plate of refractive index 1.6 and half the thickness, the number of fringes that are displaced is
Air is blown .between .two suspended balls. Then
Rise of the oil in the wick of a lampis due to
Escape velocity for 'a projectile at Earth's surface is v,. A body is projected from earth's surface with velocity $2v_e$. The velocity of the body when it is at infinite distance from the centre of the Earth is
The insulation property of air breakdown is $3 \times 10^6 V/m$. Maximum charge in coulomb that can be given to a sphere of radius 10 cm is approximately