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A steel tape is placed around the earth at the equator. When the temperature is 0°C neglecting the expansion of the earth, the clearance between the tape and the ground if the temperature of the tape rises to 30°C, is nearly $(α_{stteel} = 11 \times 10^{- 6} / K)$

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detailed solution

Correct option is D

Increase in length of tape; Δl=lαΔT

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A steel tape is placed around the earth at the equator. When the temperature is 0°C neglecting the expansion of the earth, the clearance between the tape and the ground if the temperature of the tape rises to 30°C, is nearly αstteel =11×10−6/K

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Ready to Test Your Skills?

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A steel tape is placed around the earth at the equator. When the temperature is 0°C neglecting the expansion of the earth, the clearance between the tape and the ground if the temperature of the tape rises to 30°C, is nearly $(α_{stteel} = 11 \times 10^{- 6} / K)$