A liquid remains hot or cold for a long time in thermos flask because there is no loss or gain of heat by
A. conduction
B. convection and radiation
C. Both A and B
D. None of the above
Answer: Option C
A. conduction
B. convection and radiation
C. Both A and B
D. None of the above
Answer: Option C
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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