SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the particles are vibrating
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because they are fluids
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because the particles are bonded together and cannot flow
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Because they have a high melting point
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Detailed explanation-1: -Convection is not possible in solids because for convection to take place the molecules of a substance should be free to move like liquids and gases. The molecules of a solid are tightly packed together, thus making it difficult for molecules to move around for convection to take place.
Detailed explanation-2: -Convection. Convection (illustrated in ) is the concerted, collective movement of ensembles of molecules within fluids (e.g., liquids, gases). Convection of mass cannot take place in solids, since neither bulk current flows nor significant diffusion can occur in solids.
Detailed explanation-3: -How does convection work? Convection works by areas of a liquid or gas heating or cooling greater than their surroundings, causing differences in temperature. These temperature differences then cause the areas to move as the hotter, less dense areas rise, and the cooler, more dense areas sink.
Detailed explanation-4: -Convection takes place where the movement of particles of medium takes place. This is not possible in solids, it is only possible in liquid and gases.