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NDA 2 2025 GAT, question 55

Topic: Physics

Q55

The temperature of a body increases from 310 K310\text{ K} to 340 K340\text{ K}. The temperature increase in degree Celsius is

  1. (a) 20∘C20^{\circ}C
  2. (b) 30∘C30^{\circ}CCorrect answer
  3. (c) 37∘C37^{\circ}C
  4. (d) 67∘C67^{\circ}C

Solution.

Answer: (b) 30∘C30^{\circ}C

  1. Kelvin and Celsius intervals have equal size: ΔT=340−310=30 K=30°C.
  2. The offset 273.15 is used for absolute temperature conversion, and cancels when taking a difference.