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Unit - 5.3 Thermal Expansion And its Applications — PHYSICS STD 7 — Question

ICSE BoardEnglish MediumSTD 7PHYSICSUnit - 5.3 Thermal Expansion And its Applications1 Mark
Question
Given below statement is incorrect. Write the correct statement :
To avoid derailment of train, the rails are fixed tightly, leaving no space for expansion or contraction.
✓

Answer

To avoid derailment of train, the rails are fixed tightly, leaving some space for expansion or contraction.

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