The current i flowing through the cell in the given circuit is (internal resistance of cell is zero)
1 A
3/2 A
2 A
3 A
If somehow the distance between the Sun and the Earth is doubled, the gravitational force between them will become
double
half
four times
one-fourth
If the magnitude of vector is 10 cm and the direction is North, then what is the magnitude and direction of the vector ?
20 cm East
20 cm West
20 cm North
20 cm South
An electric charge q moves with a constant velocity v parallel to the lines of force of a uniform magnetic field B. Force on charge is
qvB
qv/8
Zero
Bv/q
Petroleum is refined by
simple distillation
fractional distillation
steam distillation
vacuum distillation
B.
fractional distillation
Petroleum is a mixture of hydrocarbon molecules. These hydrocarbon molecules have different boiling points. On this basis, they are separated from petroleum for refining it. This process of refining of petroleum is called fractional distillation.