Question

It is easier to swim in sea water than in river water.

(a) True

(b) False

I got this question in a national level competition.

Asked question is from Streamline and Turbulent Flow in section Thermal Properties of Matter of Engineering Physics I

Answer 1

The correct choice is (a) True

The best I can explain: The sea water has many salts dissolved in it. So the density of sea water is greater than that of river water. Consequently, the sea water exerts greater upthrust on the swimmer than the river water. Hence it is easier to swim in sea water than in river water.