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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

Passage / Comprehension

Four rods $A, B, C, D$ of the same length and material, but of radii $r, 2 r, 3 r, 2 r$ , respectively, are held in parallel between two rigid walls. Their temperatures are increased through the same range. If the rods do not bend, answer the following questions.

The elastic energies stored in the rods are in the ratio:

Options:

Answer:

Solution:

$U = \frac{1}{2} Y A L (α Δ T)^{2} \propto A$
Area ratio is $1 : 2 : 3 : 4$
Energy ratio is also $1 : 2 : 3 : 4$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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