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

The apparent loss in weight is equal to the upthrust on the body verifies :

1. Pascal's law
2. Newton's third law
3. Archimedes' principle
4. Newton's second law

Sinking of an iron nail in water implies that :

1. the density of nail is more than the density of water
2. the density of nail is less than the density of water
3. the density of nail is equal to the density of water
4. the sinking of nail does not depend upon the density of water