Thermal sensation vs. temperature: Why does a metal pen cap feel colder than its plastic body at the same room temperature (15°C)? Explain the sensory reason though both parts are at 15°C in equilibrium. Choose the correct option.
IIT JEE
Physics
Difficulty: Easy
Choose an option
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AMetal contains less heat energy at the same temperature
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BMetal is denser, hence feels colder
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CMetal has much higher thermal conductivity and draws heat from your skin faster
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DPlastic radiates more heat to the surroundings
Answer
Correct Answer: Metal has much higher thermal conductivity and draws heat from your skin faster
Explanation
ConceptSensation of cold/warmth depends on heat flow rate. Metals conduct heat away from skin quickly; plastics are poor conductors.
ResultGreater heat flux to the metal lowers skin temperature faster, producing a colder sensation even at the same thermometer temperature.
Final AnswerMetal has much higher thermal conductivity and draws heat from your skin faster