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What is the primary mode of heat transfer in a vacuum?

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Question: What is the primary mode of heat transfer in a vacuum?

Options:

  1. Conduction
  2. Convection
  3. Radiation
  4. Insulation

Correct Answer: Radiation

Solution: 

In a vacuum, there are no particles to conduct or convect heat, so radiation is the only mode of heat transfer.

What is the primary mode of heat transfer in a vacuum?

Practice Questions

Q1
What is the primary mode of heat transfer in a vacuum?
  1. Conduction
  2. Convection
  3. Radiation
  4. Insulation

Questions & Step-by-Step Solutions

What is the primary mode of heat transfer in a vacuum?
Correct Answer: Radiation
  • Step 1: Understand what a vacuum is. A vacuum is a space that has no matter or particles in it.
  • Step 2: Know the three main modes of heat transfer: conduction, convection, and radiation.
  • Step 3: Realize that conduction requires particles to transfer heat through direct contact.
  • Step 4: Understand that convection also needs particles to move heat through fluids (liquids or gases).
  • Step 5: Since a vacuum has no particles, conduction and convection cannot occur.
  • Step 6: Learn that radiation is the transfer of heat through electromagnetic waves, which can happen in a vacuum.
  • Step 7: Conclude that in a vacuum, radiation is the only way heat can be transferred.
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