The woollen clothes keep us warm in winter because they
A. supply heat
B. do not radiate heat
C. prevent air from contacting the body
D. prevent the heat of the body from escaping
Answer: Option D
A. supply heat
B. do not radiate heat
C. prevent air from contacting the body
D. prevent the heat of the body from escaping
Answer: Option D
A. Zeroth Law of Thermodynamics
B. First Law of Thermodynamics
C. Second Law of Thermodynamics
D. Third Law of Thermodynamics
A black body can absorb radiations of
A. lower wavelengths only
B. intermediate wavelengths only
C. higher wavelengths only
D. all wavelengths
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