Thermal Properties of Matter - Thermal Expansion Question with Solution | TestHub
Thermal Properties of MatterThermal ExpansionThermal StressMedium3 minCT49
Thermal Properties of MatterMediumsingle choice
What must be the lengths of steel and copper rods at 0°C for the difference in their lengths to be 10 cm at any common temperature?
Options:
Answer:
A
Solution:
Temperature-independent difference requires αsLs=αcLc.
With coefficients 1.2 and 1.8, Ls/Lc=1.5 and difference 10 cm, giving 30 cm and 20 cm.
Stream:JEESubject:Thermal Properties of MatterTopic:Thermal ExpansionSubtopic:Thermal Stress
⏱ 3mℹ️ Source: CT49
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