A gas filled in a cylinder fitted with a movable piston is compressed. What is the nature of work done by the applied force?

Explanation

To solve the question regarding the nature of work done by the applied force when a gas in a cylinder is compressed by a movable piston, we can follow these steps:

### Step 1: Understand the System
We have a gas contained in a cylinder with a movable piston. When the piston is pushed down, it compresses the gas inside the cylinder.

### Step 2: Identify the Forces Involved
The applied force is the force exerted on the piston to compress the gas. There is also an opposing force due to the pressure of the gas inside the cylinder.

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