Question

3. The coefficients of linear expansion of steel and brass are 11 x 10-6 /°C and 19 x 10-6 P°C respectively
If their difference in lengths at all temperatures has to be kept constant at 30cm, their lengths at 0°C
should be:
1) 71.25cm and 41.25cm
2) 82cm and 52cm
3) 92cm and 62cm
4) 62.25cm and 32.25 cm​

Answer 1

Answer:

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