cse • paper_1 • thermal_physicscse-1989-subject-04-004
Room temperature — UPSC CSE 1989 Physics PYQ
Buy PYQ Solution Manual →How much faster does a cup of coffee cool when it is at 100^\circ\text{ C} than when it is at 30^\circ\text{ C}, if room temperature is 20^\circ\text{ C}?
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