Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Science Physics Heat and Transfer
Two layers of a cloth of equal thickness provide warmer covering than a single layer of cloth with double the thickness. Why?
1
Because of the air encapsulated between two layers
2
since effective thickness of two layers is more
3
Fabric of the cloth plays the role
4
More than one of the above
5
None of the above