Question

Specific gravity of the body is numerically equal to ________ of the body.
a) apparent weight in water
b) density
c) relative density
d) thermal capacity

Answer 1

Hint: In the above question we basically have to determine to which quantity among the given alternatives the specific gravity of the body is analogous to. First we need to define the specific gravity of any substance. Further we will see among the given options which it best fits with and accordingly approach to a correct answer.

Complete step by step answer:
The specific gravity of any body is defined as the ratio the density of the body to that of the density of water at 4 degrees Celsius. This definition is similar to that of relative density. Since relative density is the density of any substance to the density of another substance we can conclude that both the quantities are analogous.

So, the correct answer is “Option c”.

Note: The apparent weight of the body in water is defined as the weight of the body in air minus the buoyant force due to water. The thermal capacity of a body is defined as the ability of the body to absorb heat per degree rise in temperature. The density of the substance is defined as the ratio of mass of the body to its volume. This information is just for one to know the other options as well. There is some significance of the specific gravity. The ratio tells us whether the body will submerge in water and it also gives us an idea of how much will the body get submerged.