At 50°C, a brass rod has a length 50 cm and a diameter 2 mm. It is joined to a steel rod…
Physics · Class 11 · CBSE — Thermal Properties of Matter
At 50°C, a brass rod has a length 50 cm and a diameter 2 mm. It is joined to a steel rod of the same length and diameter at the same temperature. The change in the length of the composite rod when it is heated to 250°C is
(Coefficient of linear expansion of brass = 2.0 × 10–5 °C–1, coefficient of linear expansion of steel = 1.2 × 10–5 °C–1)
(Coefficient of linear expansion of brass = 2.0 × 10–5 °C–1, coefficient of linear expansion of steel = 1.2 × 10–5 °C–1)
- 0.28 cm
- 0.30 cm
- 0.32 cm
- 0.34 cm
Answer
(C) 0.32 cm
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