List of top Physics Questions asked in MGIMS Wardha

A drift velocity of free electrons in a conductor is $ {{\upsilon }_{d}} $ , when the current i is flowing in it. If both the radius and current are doubled, the drift velocity will be
A child swinging on a swing in sitting position, stands up, then the time period of swing will
Mark the correct option. If a ball is projected with velocity $ {{v}_{o}} $ at an angle of elevation 30?, then
A spring scale is adjusted to read zero. Particles of mass 1 g fall on the pan of the scale and collide elastically and they rebound upward with the same speed. If the height of fall of panicles is 2 m and their rate of collision is 100 particles per second, then the scale reading in grams will be $ (g=9.8m/{{s}^{2}}) $
A smooth sphere of mass m moving with velocity u directly collides elastically with another sphere of mass M at rest. After collision their final velocities are V and v respectively. The value of v is
The ratio of the numerical value of the average velocity and average speed of body is always
If a body travels half the distance with velocity $ {{v}_{1}} $ and the next half with velocity $ {{v}_{2}} $ its average velocity will be given by
An astronomical telescope has a large aperture to
Which of the following is more close to a black body?
The radius of nucleus of silver (atomic number =47) is $ 3.4\times {{10}^{-14}}m. $ The electric potential on the surface of nucleus is $ (e=1.6\times {{10}^{-19}}C) $
The unit of inductance is
The force of cohesion is
A circuit contains a capacitor and inductance each with negligible resistance. The capacitor is initially charged and the charging battery is disconnected. At subsequent time, the charge on the capacitor will
Two coherent monochromatic light beams of intensities $ I $ and 9 $ I $ are superimposed. The maximum and the minimum intensities of the resultant beams are
When a ray is incident on a medium of refractive index n at Brewster's angle, it gets
A transformer of 100% efficiency has 200rums in the primary and 40000 turns in secondary. It is connected to a 220 V main supply and secondary feeds to a 100 $ K\Omega $ resistance. The potential difference per turn is
In a single slit diffraction pattern, the distance between the first minimum on the left and the first minimum on the right is 5 mm. The screen on which the diffraction pattern is displayed is at a distance of 80 cm from the slit. The wavelength is $ 6000{AA} $ The slit width (in mm) is about
A solenoid of length 50 cm and a radius of cross-section 1 cm has 1000 turns of wire wound over it. If the current carried is 5 A, the magnetic field on its axis, near the centre of the solenoid is approximately (permeability of free space $ {{\mu }_{0}}~=4\pi \times {{10}^{-7}}T-m/A $ )
A sinusoidal voltage of peak value 300 V and an angular frequency $ \omega $ = 400 rad/s is applied to series L-C-R circuit, in which R = 3 $ \Omega $ L = 20 mH and C = 625 $ \mu F. $ The peak current in the circuit is
A conducting square loop of side L and resistance R moves in its plane with a uniform velocity v, perpendicular to one of its sides. A magnetic field of induction B, constant in space and time and pointing perpendicularly into the plane of the square, exists everywhere in space. The current induced in the loop is
An L-C-R series circuit consists of a resistance of 10 $ \Omega $ a capacitor of reactance 6.0 $ \Omega $ and an inductor coil. The circuit is found to resonate when put across a 300 V, 100 Hz supply- The inductance of coil is (take $ \pi $ = 3)
When a galvanometer is shunted by resistance S, its current capacity increases n times. If the same galvanometer is shunted by another resistance S', its current capacity will increase by n' is given by
A 100 mH coil carries 1 A current. Energy stored in its magnetic field is
A metal wire of length $ l $ area of cross-section A and Young's modulus Y behaves as a spring of spring constant k given by
The length of a needle floating on water is 2.5 cm. Calculate the added force (due to surface tension) required to pull the needle out of water. (Surface tension of water $ =7.2\times {{10}^{-2}}N/{{m}^{2}} $ )