Physics
Which of the following statements is correct ?
(i) A loaded ship is submerged more while an unloaded ship is submerged less.
(ii) A ship begins to be less submerged as it sails from sea water to river water.
- only (i)
- only (ii)
- both (i) and (ii)
- both are incorrect
Answer
only (i)
Reason — A loaded ship is submerged more while an unloaded ship is submerged less because loaded ship has more weight and exerts more force vertically downwards.
A ship begins to be submerged more as it sails from sea water to river water. The water of a river is of low density than that of a sea. Therefore, a ship sails from sea water to river water, it sinks further. The reason is that according to the law of floatation, to balance the weight of ship, a greater volume of water is required to be displaced in water of lower density in river.
Related Questions
A body floats in a liquid A of density ρ1 with a part of it submerged inside liquid while in liquid B of density ρ2 totally submerged inside liquid. The densities ρ1 and ρ2 are related as:
- ρ1 = ρ2
- ρ1 < ρ2
- ρ1 > ρ2
- nothing can be said
Every ship has a white line painted on its side known as :
- Plimsoll line
- Border line
- Harbour line
- None of the above
An unloaded ship is filled with sand at its bottom to …………… its centre of gravity and make its equilibrium ……………
- lower, unstable
- higher, stable
- lower, stable
- higher, unstable
It is easier for humans to swim in sea water than in river water as :
- the density of sea water is less than that of the river water.
- the density of sea water is more than that of river water.
- the sea is big in comparison to the river.
- None of the above