List of top Physics Questions asked in COMEDK UGET

A wire is stretched such that its length -increases by $0.2 \%$. Its resistance
An electric lamp marked $60 \, W-220 \, V$ is used on an average $5$ hours a day in a month of $30$ days. Cost of electric power consumed at the rate of Rs. 2 per unit is
Instrument used to measure e.m.f. of the cell accurately is
When a current flows through a conductor, there will be increase in temperature. This is mainly due to
Two concentric circular loops of radii $0.08 \, m$ and $0.1 \, m$ carry currents such that magnetic field at the centre is zero. If the current in the outer loop is $8 \, A$ clockwise, current in the inner loop is
Two identical metal spheres with charges $2Q$ and $-Q$ are separated by a distance. Force between them is F. They are connected by a conducting wire and then removed. Force between them now is
In Young's double slit experiment, fringe width decreases by 25% when apparatus is immersed in a liquid. Refractive index of the liquid is
When interference is observed, energy is
In an interference experiment, distance between the slits is 2 mm and screen is placed at distance 1 m from the slits. Fourth dark fringe is formed exactly opposite to one of the slits. Wavelength of light used in nm is
Limit of resolution of a telescope is $4.88 \times 10^{-6}$ rad for light of wavelength 560 nm. Diameter of the objective is
Two coherent monochromatic; light beams of intensities $I$ and $4I$ are superposed. Intensities at constructive and? destructive interferenc positions will be
When transistor is in action (emitter base junction is $J_1$, base collectorjunction is $J_2$)
In the circuit shown, the magnitude and direction of the flow of current is
A 5.0 amp current is setup in an external by a 6.0 volt storage battery for 6.0 minutes. The chemical energy of the battery is reduced by ....
A body has a weight 90 kg on the earths surface, the mass of the moon is 1/9 that of the earths mass and its radius is 1/2 that of the earths radius. On the moon the weight of the body is:
The amplitude of a particle executing SHM is 4 cm. At the mean position the speed of the particle is 16 cm/sec. The distance of the particle from the mean position at which the speed of the particle becomes $ 3.5\times {{10}^{4}}K $ cm/s, will be :
From an automatic gun a man fires 360 bullets per minute with a speed of 360 km/hour. If each weighs 20 g, the power of the gun is :
The viscous force acting on a rain drop of radius 0.35 mm falling through air with a velocity of 1 m/s, is $ \text{1 km}/{{\text{s}}^{\text{2}}} $
A body moving with uniform acceleration describes 40 m in the first 5 sec and 65 m in next 5 sec. Its initial velocity will be :
A free unit positive charge is kept at a distance $r$ along the equatorial line from two equal like charges $+Q_1$ and $+Q_2$. The unit positive charge
Two narrow capillary tubes A and B are of lengths ( and 111 and of same radius r. The rate of flow of water through the tube A under a constant pressure head P is 3 $ \sqrt{\text{49}0}\text{ m}/\text{s} $ . If A and B are connected in series and the same pressure difference P is maintained between the ends of the composite tube, then the rate of flow of water is :
The displacement time graph for two bodies A and B are straight lines inclined at 30? and 60? respectively with the time axes. If $ \upsilon =\sqrt{4rg} $ and $ \upsilon =\sqrt{4\times 2.5\times 9.8} $ are their velocities, then $ \upsilon =\sqrt{98}\,\,m/s $ will be :
The maximum and minimum tensions in the string whirling in a circle of radius 2.5 m are in the ratio 5:3 then its velocity is :
In a potentiometer experiment, two cells of emf $E_1$ and $E_2$ are used in series in the secondary circuit. The balancing length is found to be 58 cm. If the polarity of $E_2$ is reversed, the balancing length becomes 29 cm. The ratio $E_1/E_2$ of the emfs of two cells is :
When the glancing angle of incidence of light on a material is 30$^\circ$, the reflected and refracted light are found to be perpendicular. The refractive index of material is