An iron rod of length 50 cm is joined at an end to an aluminium rod of length 100 cm. All measurement refer to 20°C. The co-efficient of linear expansion of iron and aluminium are 12 × 10−6°C−1and 24 × 10−6respectively. The average co-efficient of linear expansion of composite system is P × 10−6°C−1. then value of p is

someshwar somu , 11 Years ago

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