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Question 30839
JEE Physics · Hard

Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Volume Expansion MCQ

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Volume ExpansionHardQuestion 30839

Question

Density of a material decreases on heating because:
  1. A
    Mass increases
  2. B
    Volume increases while mass stays constant
    Correct
  3. C
    Volume decreases
  4. D
    Both mass and volume increase equally

Correct answer

Volume increases while mass stays constant

Explanation

ρ = m/V. On heating, V increases while m is constant, so ρ decreases.

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