physics

 Young's modulus is defined a

• Tensile strain/Tesnsile stress

• Tensile stress*Tensile strain

• Tensile stress/Tensile strain

• Length/area

When too many people stand on a bridge it collapses, why?

• Due to increase in stress

• Due to overweight

• Due to improper construction

• Due to friction

With rise in temperature, the Young’s modulus of elasticity of a material

• Increases

• May increase or decrease

• Does not change

• Decreases

The limit beyond which the material does not behave elastically is known as

• Proportional limit

• Plastic limit

• Elastic limit

• Yield Point

Due to the forces acting, a horizontal beam is in:

• Shear

• Compression

• Tension

• None

The unit of Young’s modulus of elasticity is:

• pascals

• metres

• dimension-less

• newtons

Due to forces acting, a pillar supporting a bridge is in:

• compression

• shear

• tension

• none

When compared with solids and liquids, the gases have

• Minimum volume elasticity

• Maximum volume elasticity

• Maximum Young's modulus

• Maximum modulus of rigidity

What is another name for modulus?

• Quotient

• Quaternion

• Remainder

• Remnant

Define tensile strain.

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Answer explanation

Extension divided by its original length. Do use symbols unless they are defined. Strain has no units.