An iron tyre of diameter 2 m is to be fitted on to a wooden wheel of diameter 2.01 m . The temperature to which the tyre must be heated, if α = 11 × 1 0 – 6 ° C - 1 and room temperature is 20 ° C , will be

Question

An iron tyre of diameter 2 m is to be fitted on to a wooden wheel of diameter 2.01 m . The temperature to which the tyre must be heated, if α = 11 × 1 0 – 6 ° C - 1 and room temperature is 20 ° C , will be, 474.5 ° C, 490.5 ° C, 440.5 ° C, 460.5 ° C

MARKS App · Accepted Answer

Δ θ = Δ l l α Δ θ = 0.01 2 × 11 × 10 - 6 Δ θ = 10 4 22 = 454.5 θ = 454.5 + 20 = 474.5 o C

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