Two substances X and Y, each of mass 1.0 kg, absorb the same quantity of thermal energy. Substance X shows a temperature rise of 5 °C and substance Y shows a temperature rise of 20 °C. Which conclusion is correct?

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Question

Two substances X and Y, each of mass 1.0 kg, absorb the same quantity of thermal energy. Substance X shows a temperature rise of 5 °C and substance Y shows a temperature rise of 20 °C. Which conclusion is correct?

Accepted Answer

Substance X has a higher specific heat capacity than substance Y — From c = Q / (mΔT), a smaller temperature rise for the same Q and m means a larger c. Substance X has ΔT = 5 °C giving a higher c, while substance Y has ΔT = 20 °C giving a lower c. Option B reverses this reasoning. Option C is incorrect because their temperature rises differ. Option D contradicts the given information that both absorbed the same energy.

Answer

Substance X has a higher specific heat capacity than substance Y

Answer

Substance Y has a higher specific heat capacity than substance X

Answer

Both substances have the same specific heat capacity

Answer

Substance X absorbed more energy than substance Y

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