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Question

How many types of thermal expansion coefficients are there for a liquid?

  1. 0
  2. 1
  3. 2
  4. 3
WBBSE Class X Physical Science Thermal phenomena 01 Mark 2023

Answer

(c) 2

Explanation:

For liquids, two types of thermal expansion coefficients are defined:

  1. Real (True) Expansion Coefficient – Refers to the actual expansion of the liquid itself.
  2. Apparent Expansion Coefficient – Refers to the observed expansion when the liquid is in a container, since the container also expands.

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