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Which of the following statements about specific heat of a body is/are

June 1, 2025 by rawan239

Which of the following statements about specific heat of a body is/are correct ?

1. It depends upon mass and shape of the body
2. It is independent of mass and shape of the body
3. It depends only upon the temperature of the body

Select the correct answer using the code given below :

1 only

2 and 3

1 and 3

2 only

This question was previously asked in

UPSC NDA-1 – 2018

Download PDF Attempt Online

The correct answer is (D) 2 only. Specific heat capacity is an intrinsic property of the material itself. It is defined as the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius (or Kelvin). Therefore, it is independent of the mass and the shape of the *specific body* made from that substance. While specific heat capacity can vary slightly with temperature and pressure for a given substance, statement 3 claiming it depends *only* upon the temperature is inaccurate, as the fundamental material composition is the primary determinant. Statement 1 is definitively incorrect. Statement 2 correctly states that it is independent of mass and shape of the body.

Specific heat capacity is an intensive property of a substance, meaning it does not depend on the amount (mass) or form (shape) of the substance.

Heat capacity (C), in contrast to specific heat capacity (c), *does* depend on the mass of the body (C = mc). Specific heat capacity is a fundamental property used to compare how different substances store thermal energy. For example, water has a high specific heat capacity compared to metals.

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