List of top Questions asked in MGIMS Wardha- 2009

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

A capillary tube of radius r is immersed in water and water rises in it to a height H. Mass of water in the capillary tube is m. If the capillary of radius 2r is taken and dipped in water, the mass of water that will rise in the capillary tube will be

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}} $ )

A metallic solid sphere is rotating about its diameter as axes of rotation. If the temperature is increased by 200?C, the percentage increase in its moment of inertia is (Coefficient of linear expansion of the metal $ ={{10}^{-5}}{{/}^{o}}C $ )

In planetary motion the areal velocity of position vector of a planet depends on angular velocity ( $ \omega $ ) and distance of the planet from the sun (r). If so the correct relation for areal velocity is

Certain neutron stars are believed to be rotating at about 1 rev /s. If such a star has a radius of 20 km, the acceleration of an object on the equator of the star will be

The moment of inertia of a thin spherical shell of mass M and radius R about a diameter is $ \frac{2}{3} $ MR 2Its radius of gyration K about a tangent will be