Woollen clothes protect the body from cold because
A. it is a good conductor of heat
B. it is a poor conductor of heat
C. external heat rays enter into the body through the woollen cloth
D. it reflects heat
Answer: Option B
A. it is a good conductor of heat
B. it is a poor conductor of heat
C. external heat rays enter into the body through the woollen cloth
D. it reflects heat
Answer: Option B
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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