Question

Surface the lake is at 2°C and depth of the lake is 20m. Find the temperature of the bottom of the lake?

(a) 2°C

(b) 3°C

(c) 4°C

(d) 552°C

The question was posed to me by my school teacher while I was bunking the class.

My question comes from Gases in section Kinetic Theory of Gases of Engineering Physics I

Answer 1

Right option is (d) 552°C

For explanation I would say: P1/T1 =P2/T2

(1×10^5)/(273+2)=(hρg+1×10^5)/T2

(1×10^5)/275=(20×10^3×10+1×10^5)/T2

T2=275×3=825K=552℃.