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Heat and Thermodynamics question

2025 · 29 Jan · Shift 2 · Q58
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Heat and Thermodynamics question

2025 · 29 Jan · Shift 2 · Q58

JEE MainPhysicsHeat and ThermodynamicsMCQ+4 / −1
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:
  1. A
    135t\frac{13}{5}t513​t
  2. B
    1013t\frac{10}{13}t1310​t
  3. C
    513t\frac{5}{13}t135​t
  4. D
    1310t\frac{13}{10}t1013​t
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