Jee Main
Heat And Thermodynamics
JEE Main 2025 (Online) 29th January Evening Shift
MCQ+4 / -12025
A cup of coffee cools from 90°C to 80°C in t minutes when the room temperature is 20°C. The time taken by the similar cup of coffee to cool from 80°C to 60°C at the same room temperature is:
