National geographic channel vs Discovery Channel Comparison in Hindi #Shorts #Short

____ one-hour slot on Doordarshan National channel, is an initiative by the Department of Science and Technology along with Doordarshan, Prasar Bharti.

A short bar magnet is placed with its south pole facing geographic south and the distance between the null point is found to be 16 cm . When the magnet is turned pole to pole at the same place then the distance between the null points will be

A short bar magnet is placed in the magnetic meridian with its north pole pointing towards geographical south. A neutral point is found at a distance of 30 cm from the centre of the magnet. If the horizontal component of earth's field is 0.4G , calculate the magnetic moment of the magnet .

A short bar magnet of magnetic moment 0*5JT^-1 is placed with its magnetic axis in magnetic meridian, with its north pole pointing geographic north. A neutral point is obtained at a distance of 0*1m from the centre of the magnet. Find the horizontal component of earth's magnetic field.

A short bar magnet of magnetic moment 0*5JT^-1 is placed with its magnetic axis in the magnetic meridian, with its north pole pointing geographic north. A neutral point is obtained at a distance of 0*1m from the centre of the magnet. Find the horizontal component of earth's magnetic field.

A very short bar magnet has magnetic moment 1*4175JT^-1 . It is placed (i) with its north pole pointing towards geographic north (ii) with its north pole pointing towards geographic south. If horizontal component of earth's field at the place is 0*42gauss , calculate the distance of the neutral points from the magnet.

Rama watched in discovery channel that ini outer space, at greater heights above the surface of the Earth where atmosphere does not exist appears completely dark. Explain what would be the reason for this?