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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 forces on the rods exerted by the wall are in the ratio:

Options:

Answer:

Solution:

$F = Y A α Δ T \propto r^{2}$
Radii are $r, 2 r, 3 r, 2 r$
Force ratio is $1 : 2 : 3 : 4$

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

⏱ 2mℹ️ Source: QB

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