In the P-V diagram shown in figure, `ABC` is a semicircle. Find the work done in the process `ABC`.

Options

A. `450 pi kJ`
B. `275 pi kJ`
C. `375 pi kJ`
D. `175 pi kJ`

Answer

C

Explanation

`W = -(pi)/(8)(P_2-P_1)(V_2-V_1)`
`W=(pi)/(8)(4-1)xx10^(5)xx(20-10)`
`=(pi)/(8)xx3xx10xx10^5=375kJ`.