Physics Mcqs

A wire is stretched by a force F which causes an extension 1. The energy stored in the wire is____________________?

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A wire is stretched by a force F which causes an extension 1. The energy stored in the wire is____________________?

A. The extension of the wire is proportional to the force applied
B. The weight of the wire is negligible
C. The wire is not stretched beyond its elastic limit
D. The cross sectional area of the wire remains constant

A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by_________________?

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A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by_________________?

A. Stress/strain
B. (stress/strain)
C. Stress x strain
D. (Stress / strain)

When a force is applied at one end of an elastic wire it produces at strain ∝ in the wire. If y is the youngs modulus of the material of the wire the amount of energy stored per unit volume of the wire is given by_________________?

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When a force is applied at one end of an elastic wire it produces at strain ∝ in the wire. If y is the youngs modulus of the material of the wire the amount of energy stored per unit volume of the wire is given by_________________?

A. Y∝
B. 2Y∝
C. Y∝/2
D. Y∝2