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Physics - Elasticity Question with Solution | TestHub

PhysicsElasticityMiscellaneousMedium2 minQB

PhysicsMediumsingle choice

If the ratio of lengths, radii and Young's moduli of steel and brass wires in the figure are a,b and c respectively, then the corresponding ratio of increase in their lengths is :-

Options:

Answer:

Solution:

$Δ ℓ = \frac{T ℓ}{A Y}$ with $T_{s} = 3 m g$ , $T_{b} = 2 m g$

$\frac{Δ ℓ _{s}}{Δ ℓ _{b}} = \frac{3}{2} \times a \times \frac{1}{b ^{2}} \times \frac{1}{c} = \frac{3 a}{2 b ^{2} c}$

Answer (B)

Stream:JEESubject:PhysicsTopic:ElasticitySubtopic:Miscellaneous

⏱ 2mℹ️ Source: QB

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