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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

A metal ball immersed in water weighs $W_{1}$ at 0°C and $W_{2}$ at 50°C. The coefficient of cubical expansion of metal is less than that of water. Then:

Options:

Answer:

Solution:

Apparent weight $W = m g (1 - ρ_{w} / ρ_{s})$ . Water expands more, so $ρ_{w} / ρ_{s}$ falls as temperature rises and $W$ rises: $W_{1} < W_{2}$ . Answer (B).

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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