Physics
Every ship has a white line painted on its side known as :
- Plimsoll line
- Border line
- Harbour line
- None of the above
Answer
Plimsoll line
Reason — Plimsoll line indicates the safe limit for loading the ship in water of density 103 kg m-3. A ship is not allowed to load further if its plimsoll line starts touching the water level, so that when it sails in sea water of density more than 103 kg m-3, only the part of it below the plimsoll line remains submerged in water.
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
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
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