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Conductor and Insulators

Question

On a cold day when a room temperature is $15^{o} C$ , the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of $15^{o} C$ , because
plastics have a lower density than metals
metals have higher thermal capacity than plastics
metals are good conductor of heat
plastics have a higher thermal conductivity than metals

A

metals have higher thermal capacity than plastics

B

plastics have a higher thermal conductivity than metals

C

metals are good conductor of heat

D

plastics have a lower density than metals

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Solution

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On a cold day when a room temperature is $15^{o} C$ , the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of $15^{o} C$ because metals are good conductor of heat, so they could absorb and release heat in a better way than insulators.

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Similar Questions

Q1

On a cold day when a room temperature is

15^{o} C

, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of

15^{o} C

, because

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Q2

Statement-1
On a chilly day, the metallic cap of a pen feels much colder than the plastic body although both are at the same (room) temperature.
Statement-2
Metal has a higher coefficient of thermal conductivity than plastic.

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Q3

Heat energy will flow from body 'A' to body 'B' if

(a) B is at a higher temperature than A
(b) A is at a higher temperature than B
(c) both are at the same temperature
(d) both are very hot

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{C H}_{3} O H

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. Molecules of higher molecular weight have lower kinetic energy than lower molecular weight molecules when the different substances are at the same temperature.

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Q5

Assertion :A brass tumbler feels much colder than a wooden tray on a chilly day. Reason: The thermal conductivity of brass is less than that of wood.

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