PHYSICS

JAMB 2001 - Question 19

Physics 2001 JAMB Past Questions - Question 19: A gas with initial volume of 2 X 10-6m3 is allowed to expand to six times its initial value at constant pressure of 2 x 105Nm-2. The work done is?

Choose the correct answers from the options given.
A gas with initial volume of 2 X 10-6m3 is allowed to expand to six times its initial value at constant pressure of 2 x 105Nm-2. The work done is?
A:
B:
C:
D:
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Correct Answer

A

Explanation

P = F/A => F = PA = PV/L
Volume V2 = 6 * 2 x 10−6
W = PΔV = 2 x 10^5
* (12 x 10−6 - 2 x 10−6)
= 2 x 10^5
  10 x 10−6
= 2.0J