GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hooke’s law is not obeyed when the load is increased from zero to this point.
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When the load is increased beyond the limit of proportionality, the diameter of the wire will increase.
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When the load is increased beyond the limit of proportionality, the diameter of the wire will increase.
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Up to the limit of proportionality, there is no change in the shape of the wire.
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Detailed explanation-1: -B When the load is increased beyond the limit of proportionality, the diameter of the wire will increase.
Detailed explanation-2: -The limit of proportionality refers to the point beyond which Hooke’s law is no longer true when stretching a material. The elastic limit of a material is the furthest amount it can be stretched or distorted without being able to return to its previous shape.
Detailed explanation-3: -Question. Which statement describes thermal conduction in a metal by electrons? Atoms and electrons move freely throughout the metal.
Detailed explanation-4: -force = constant x extension (F=kx) Hooke’s Law states that within the elastic limit, the extension (x) of an object is directly proportional to the force (f) that causes the extension.