A metal washer has a hole of diameter d1 and an external diameter d2 such that d2 = 3d1. If on heating d2 increases by 0.3% then d1

Thermal Expansion of WasherA metal washer has a hole of diameter d1 and an external diameter d2 such that d2 = 3d1. If on heating d2 increases by 0.3%, then the change in d1 is:ExplanationThermal expansion causes the entire washer to expand uniformly.Fractional increase in any linear dimension is the same for the whole object.So d1 also increases by the same percentage as d2 (0.3%).Final AnswerThe diameter d1 also increases by 0.3%.

A metal washer has a hole of diameter d1 and an external diameter d2 such that d2 = 3d1. If on heating d2 increases by 0.3% then d1

Thermal Expansion of WasherA metal washer has a hole of diameter d1 and an external diameter d2 such that d2 = 3d1. If on heating d2 increases by 0.3%, then the change in d1 is:ExplanationThermal expansion causes the entire washer to expand uniformly.Fractional increase in any linear dimension is the same for the whole object.So d1 also increases by the same percentage as d2 (0.3%).Final AnswerThe diameter d1 also increases by 0.3%.

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A metal washer has a hole of diameter d₁ and an external diameter d₂ such that d₂ = 3d₁. If on heating d₂ increases by 0.3% then d₁

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decreases by 0.3%

increases by 0.3 %

decreases by 0.1%

increases by 0.1 %

answer is D.

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Detailed Solution

Thermal Expansion of Washer

A metal washer has a hole of diameter d₁ and an external diameter d₂ such that d₂ = 3d₁. If on heating d₂ increases by 0.3%, then the change in d₁ is:

Explanation