What happens to a football which is inflated in a warm room, is used to play outside in cold weather?
Correct answer: B. It will deflate due to contraction of the air molecules
- A. It will expand due to expansion of the air molecules
- B. It will deflate due to contraction of the air molecules
- C. Its size will not be affected by the change in temperature
- D. It will burst.
Explanation
When the football is inflated in a warm room, the air molecules inside the ball are moving rapidly and are spaced farther apart, occupying more volume. As the ball is taken outside into cold weather, the air molecules slow down and move closer together, occupying less volume. This contraction of air molecules causes the pressure inside the ball to decrease, resulting in a deflation of the ball.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
Practise Thermodynamics
719 free Thermodynamics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Thermal Equilibrium and Heat questions
The thermal energy required to cause a unit temperature rise is called
For an ideal gas equation PV= nRT, the dimensions of Real Gas Constant R are:
The thermodynamics process during which the pressure is kept constant is called:
When a gas is compressed isothermally, the product of its pressure and volume during the process is:
Thermodynamics is that branch of Physics in which we study
Temperature of given mass of a gas is changed from 150°C to 300°C during an isobaric process, volume of the gas will become: