List of top Questions asked in VMMC Medical- 2005

One milligram of matter converted into energy, will give:

20 amp current is flowing in a long straight wire. The intensity of magnetic field at a distance of 10 cm from the wire, will be:

In a simple microscope, if the final image is located at 25 cm from the eye placed close to the lens, then the magnifying power is:

A black body at 200 K is found to exit maximum energy at a wavelength 14 $ \mu m $ . When its temperature is raised to 1000 K, then wavelength at which maximum energy emitted is :

Joule second is the unit of:

The half-life of radium is 1620 years and its atomic weight is 226 kg per kilomol. The number of atoms that will decay from its 1 gm sample per second will be :(Avogadros number $ N=6.023\,\times {{10}^{23}} $ atoms/mol)

The capacity of a condenser is $ 4\times {{10}^{-6}} $ farad and its potential is 100 volts. The energy released on discharging it fully will be:

An electron having charge $ 1.6\,\times {{10}^{-19}}\,C $ and mass $ 9\times {{10}^{-31}}\,kg $ is moving with $ 4\times {{10}^{6}}\,kg $ speed in a magnetic field of $ 2\times {{10}^{-1}} $ tesla in a circular orbit. The force acting on an electron and the radius of circular orbit will be:

If $ {{E}_{1}} $ be the electric field strength of a short dipole at a point on its axial line and $ {{E}_{2}} $ that on the equatorial line at the same distance, then:

The ratio of thermal conductivity of two rods of different material is 5 : 4. The two rods of same area of cross-section and same thermal resistance will have the lengths in the ratio :