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Two thin blankets keep us more war...

Two thin blankets keep us more warm than one blanket of thickness equal to these two .The reason is

A

their surface area increases

B

a layer of air is formed between two blanket , which is bad conductor

C

these have more wool

D

they absorb more heat from outside

Text Solution

Verified by Experts

The correct Answer is:
B
Due to presence of layer of air , non conducting medium makes two blankets more warm .
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