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JAMB Physics 2016 Question 4

Question 4

Quantity of Heat

Calculate the temperature change when 500 J of heat is supplied to 100g of water.

  1. A.12.1°C
  2. B.2.1°C
  3. C.1.2°C
  4. D.0.1°C.
Show the answer and explanation

Answer: C (1.2°C)

Explanation

Δθ = Q/(mc) = 500 ÷ (0.1 × 4200) ≈ 1.2°C, using 4200 J kg−1 K−1 for water.