Assertion : A solid object of iron is dipped in water, both are at same temperature of `2^(@)C`. If the temperature of water is increased by `2^(@)C`, then the buoyancy force action of the object will increase.
Reason : If we increase the temperature of water from `2^(@)C " to " 4^(@)C`, then density of water will increase. Ignore expansion of solid sphere.

Options

A. will increase
B. will decrease
C. will not change
D. may decrease or increase depending on the values of their coefficient of expansion

Answer

A

Explanation

Increasing the temperature of water from `2^(0)C` to `3^(0)C` increases its density while decreases the density of iron. Hence the bouyant force increases.