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

If a body is completely immersed in a liquid, the volume of the liquid displaced will be …………… its own volume and the upthrust will be ……………

1. less than, minimum
2. equal to, minimum
3. more than, maximum
4. equal to, maximum

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.

Archimedes' principle applies on :

1. solids and liquids
2. liquids and gases
3. solids and gases
4. solids, liquids and gases