Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-diagram based-Hard-Class 11
Consider a diagram showing a piston compressing a gas in a cylinder. The initial volume is V_i and the final volume is V_f. If the process is carried out by an external pressure p_ex, what is the sign of the work done on the system?
A
Positive
B
Negative
C
Zero
D
Depends on temperature
Correct Answer
Option A
Detailed Explanation
In the context of compression, the work done on the system is given by the equation w = -p_ex (V_f - V_i). Since (V_f - V_i) is negative in compression, the work done is indeed positive.
Found an issue with this question?