A small amount of air is introduced into the vacuum above the mercury in a…

Physics WAEC 2019

A small amount of air is introduced into the vacuum above the mercury in a mercury barometer tube. The mercury level goes down because the air molecules

 

 

  • heat the mercury and make it expand
  • increase the pressure above the mercury. checkmark
  • cool the mercury and make it contract.
  • decrease the pressure above the mercury

The correct answer is: B

Explanation

No official explanation is available for this question at this time. Please check contributions posted by others below. If you can provide an explanation to help other student learn.
Previous Question Next Question

Leave A Comment