The working principle of a mercury thermometer is
A. change in density ofmatter on heating
B. expansion of matter on heating
C. thermal resistance of matter
D. change in mass of matter on heating
Answer: Option B
A. change in density ofmatter on heating
B. expansion of matter on heating
C. thermal resistance of matter
D. change in mass of matter on heating
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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