A body will experience minimum upthrust when it is completely immersed in:

1. Turpentine
2. Water
3. Glycerine
4. Mercury

Floating of a cork on the surface of water indicates that :

1. the density of water is more than the density of cork.
2. the density of water is less than the density of cork.
3. the density of water is equal to the density of cork.
4. the density of water plays no role in the floatation of cork.

A body weighed 'W' in air by a sensitive spring balance, will weigh …………… in vacuum.

1. the same
2. slightly more
3. slightly less
4. zero

Bodies of density …………… than that of the liquid sink in it, while bodies of average density equal to or …………… than that of the liquid float on it.

1. smaller, greater
2. greater, greater
3. greater, smaller
4. smaller, smaller