GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If both the volume and the absolute temperature of a confined gas are doubled, the pressure will
A
Not change
B
Be halved
C
Become four times as great
D
None of the above
Explanation: 

Detailed explanation-1: -Boyle’s Law states that when the temperature of a given mass of confined gas is constant, the product of its pressure and volume is also constant.

Detailed explanation-2: -If both the volume and the absolute temperature of a confined gas are doubled, the two changes will cancel each other, so the pressure of the gas will not change.

Detailed explanation-3: -Double the temperature, double the pressure. Constant volume is easy to achieve: you just need a gas inside a sealed container of some sort.

Detailed explanation-4: -At the molecular level, the pressure of a gas depends on the number of collisions its molecules have with the walls of the container. If the pressure on the piston is doubled, the volume of the gas decreases by one-half.

Detailed explanation-5: -Therefore the answer is B it will increase by four times its original value.

There is 1 question to complete.