Thermal Physics - Thermal Properties of Matter
Q. What is the principle behind a thermos flask? (2022)
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A.
Conduction
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B.
Convection
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C.
Radiation
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D.
Insulation
Solution
The principle behind a thermos flask is insulation, which minimizes heat transfer.
Correct Answer: D — Insulation
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Q. What is the specific heat capacity of iron? (2023)
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A.
0.45 J/g·K
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B.
1.00 J/g·K
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C.
2.00 J/g·K
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D.
4.18 J/g·K
Solution
The specific heat capacity of iron is approximately 0.45 J/g·K.
Correct Answer: A — 0.45 J/g·K
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Q. Which of the following materials has the highest thermal conductivity? (2020)
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A.
Copper
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B.
Wood
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C.
Glass
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D.
Air
Solution
Copper has the highest thermal conductivity among the given materials.
Correct Answer: A — Copper
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