A heat engine has an efficiency n. Temperatures of source and sink are each decreased by 100 K. The efficiency of the engine: A heat engine has an efficiency n. Temperatures of source and sink are each decreased by 100 K. The efficiency of the engine: September 12, 2021 Category: Chapter 15 - Thermodynamics , MTG NEET Physics , Facebook Messenger WhatsApp Share this:TwitterFacebook Related