A fan produces feeling of comfort during hot weather, because
A. fan supplies cold air
B. our perspiration evaporates rapidly
C. one body radiates more heat
D. conductivity of air increase
Answer: Option B
A. fan supplies cold air
B. our perspiration evaporates rapidly
C. one body radiates more heat
D. conductivity of air increase
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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