When is work said to be done?

A. जब force displacement पैदा करे / When force produces displacement

Step 1: Identify the concept: this is about work in physics. Step 2: Work is done only when a force causes displacement of an object. Step 3: Remember work needs force and displacement.

Step 1: concept पहचानें: यह work in physics से जुड़ा है। Step 2: Work तभी होता है जब force लगने से object displacement करे। Step 3: Work needs force and displacement याद रखें।