Which of the following statements about heat loss in a thermos flask is incorrect?

JAMB Physics 2023 76 views

Which of the following statements about heat loss in a thermos flask is incorrect?

  1. The vacuum between the inner and outer walls minimizes heat loss by conduction.
  2. The reflective coating on the inner walls minimizes heat loss by radiation.
  3. The tightly sealed lid minimizes heat loss by convection.
  4. The vacuum between the inner and outer walls prevents heat loss by radiation. ✓

Explanation

This physics concept involves analyzing the given values and applying relevant formulas. Work through the problem step by step using known equations and constants.

Identify what quantity needs to be found and which formula connects the given information to the answer. Substitute the values carefully, paying attention to units.

Check that your calculated answer matches one of the options provided. Understanding the underlying principle helps verify the solution makes physical sense.

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