Physics · Thermal Properties of Matter
The difference in length between two rods A and B is 60 cm at all temperatures. If the coefficients of linear expansion are αA = 18 × 10-6/°C and αB = 27 × 10-6/°C, find the initial lengths of the two rods.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1lA = 200 cm, lB = 140 cm
- 2lA = 180 cm, lB = 120 cm✓
- 3lA = 160 cm, lB = 100 cm
- 4lA = 120 cm, lB = 60 cm
Correct answer
lA = 180 cm, lB = 120 cm
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