Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Physics Heat and Transfer
Why the surface of a lake is frozen in severe winters, but the water at its bottom is still at liquid state?
1
the density of water is maximum at 3 °C.
2
since the surface of the lake is at the same temperature as the air, no heat is lost.
3
ice is a bad conductor of heat.
4
More than one of the above
5
None of the above