JEE MAIN 2025(29jan shift 2) A cup of coffee cools from 90°C to 80°C in tminutes when the room tempe

January 31, 2025
Written By Physics Monk

Vivek SIngh sir has 16+ years of experience in teaching physics, clearing doubts for IITJEE & NEET exams.

JEE MAIN 2025(29jan shift 2) A cup of coffee cools from 90°C to 80°C in tminutes when the room tempe

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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:

(a)13t / 5 b) 5t /13. c)12t / 5. d)2t

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