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JAMB Physics 2013 Question 19

Question 19

Quantity of Heat

Two liquids X and Y having the same mass are supplied with the same quantity of heat. If the temperature rise in X is twice that of Y, the ratio of specific heat capacity of X to that of Y is

  1. A.2:1.
  2. B.1:2.
  3. C.4:1.
  4. D.1:4.
Show the answer and explanation

Answer: B (1:2.)

Explanation

Q = mcΔθ is the same for both, so c is inversely proportional to Δθ. X rises twice as much, so cX : cY = 1 : 2.