Test Academy | Span of a bridge is 2.4 km. At 30°C a cable along the span sags by 0.5 km. Taking α =12 x10⁻⁶ per °C , change in length of cable for a change in temperature from 10°C to 42°C is 9.9 m, 0.099 m, 0.99 m, 0.4 km

Question

Span of a bridge is 2.4 km. At 30°C a cable along the span sags by 0.5 km. Taking α =12 x10⁻⁶ per °C , change in length of cable for a change in temperature from 10°C to 42°C is

Options :

9.9 m
0.099 m
0.99 m
0.4 km

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