Which variable is held constant in Boyle's Law?

Question

Question

This question was previously asked in

SSC Scientific Assistant Physics Official Paper (Held On: 25 November 2017 Shift 1)

Answer 1

CONCEPT:

Boyle’s law:

F1 P.Y Madhu 16.04.20 D1

For a given mass of an ideal gas at a constant temperature, the volume of a gas is inversely proportional to its pressure.
i.e.\(\Rightarrow \frac{{{P_1}}}{{{P_2}}}\; = \;\frac{{{V_2}}}{{{V_1}}}\;\)
or PV = constant
⇒ P1V1 = P2V2
As temperature remains constant in the isothermal process, then Boyle's law holds for an ideal gas Isothermal changes.

EXPLANATION:

From above it is clear that, in Boyle’s law temperature remains constant. Therefore option 2 is constant.