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A steel scale is correct at 0°C. The length of a brass tube measured by it at 40°C is 4.5m. The correct length of the tube at 0°C is (Coefficients of linear expansion of steel and brass are 11 × 10^-6/°C and 19 × 10^-6/°C respectively).

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4.001m

5.001 m

4.999m

4.501m

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detailed solution

Correct option is D

lc=lm1+αS~αbt2−t1

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A steel scale is correct at 0°C. The length of a brass tube measured by it at 40°C is 4.5m. The correct length of the tube at 0°C is (Coefficients of linear expansion of steel and brass are 11 × 10-6/°C and 19 × 10-6/°C respectively).

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

A steel scale is correct at 0°C. The length of a brass tube measured by it at 40°C is 4.5m. The correct length of the tube at 0°C is (Coefficients of linear expansion of steel and brass are 11 × 10^-6/°C and 19 × 10^-6/°C respectively).