Work done by air when it expands from 50 litres to 150 litre... | PHYSICS - HEAT, INTERNAL ENERGY AND WORK | SolveeIt | Solveeit

Today, August 19

Question

Work done by air when it expands from 50 litres to 150 litres at a constant pressure of 2 atmosphere is

A

$2 \times 10^{4}$ joules

B

$2 \times 100$ joules

C

$2 \times 10^{5} \times 100$ joules

D

$2 \times 10^{- 5} \times 100$ joules

Answer

$2 \times 10^{4}$ joules

Explanation

Solution

$W = P \times \Delta V = 2 \times 10^{5}(150 - 50) \times 10^{- 3} = 2 \times 10^{4}J$