A bar of iron is 10 cm at 20- C- At 19- C it will be a of iron -11 - 10-6 - C A- 11- 10-6 cm longerB- 11- 10-6 cm shorterC- 11- 10-5 cm shorterD- 11- 10-5 cm longer

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Thermal Expansion

A bar of iron...

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A bar of iron is 10 cm at 20°C. At 19°C it will be (a of iron = 11 x 10^-6/°C)

11 ´ 10^-6 cm longer

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11 ´ 10^-6 cm shorter

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11 ´ 10^-5 cm shorter

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11 ´ 10^-5 cm longer

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Using which of the following measurements, can a $△$ ABC be constructed ?

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