Tag: applications of heat conduction

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Questions Related to applications of heat conduction

Multiple choice physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

Wearing black clothes in summer is more preferable. True or false.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
False
Wearing black clothes in summer is not preferable as during summer there is more heat present in the atmosphere and black clothes absorb more heat comparatively. So, black clothes are not preferable during summer.
Multiple choice physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

State whether given statement is True or False
Two thin blankets are more warmer than one thick blanket

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The blanket do not insulate; actually air insulates.
Air is trapped in the space between two thin blankets. Since air is insulator of heat, it prevents the escape of body heat. The air can't pass deeper and the layers will stop the air in two thin blankets where as there are no layers and air can pass deeper in one thick blanket. That's why two thin blankets are usually warmer than one thick blanket.
Multiple choice physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity
Metal floors cool more than a wood floor in winters because:

  1. Metal conducts heat more readily than wood

  2. Wood conducts heat more readily than metal

  3. Metal has a higher specific heat than wood

  4. The temperature of the wood is higher than the temperature of the metal

  5. The temperature of the metal is higher than the temperature of the wood
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Metals are good conductor of heat whereas wood does not conduct heat at all.

Thus in winters, metal floors cool more than a wood floor.

Multiple choice physics transfer of heat applications of heat conduction applications of insulation clothes - our necessity

__and__are good conductors of heat

  1. Silver, Copper

  2. Wood,Plastic

  3. Glass,Paper

  4. Pure water,Iron
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Silver and copper are good conductors of heat.
$\because$ Silver and copper are only metals present there and as we know metals have conductivity of heat and electricity than non-metal and metalloids. So, silver and copper are god conductors of heat.