A rectangular plate of dimensions a × b has a circular hole of radius r . On heating, which of the following would decrease?

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PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

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A rectangular plate of dimensions $a \times b$ has a circular hole of radius $r$ . On heating, which of the following would decrease?

Options:

Answer:

Solution:

Heating increases the rectangle's dimensions and hole radius.
The mass stays constant while the material volume increases.
$ρ = \frac{m}{V}$
therefore decreases.

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

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