MECHANICAL PROPERTIES OF SOLIDS

The reciprocal of bulk modulus is called...........

• conductivity

• compressibility

• shear modulus

• resistivity

When a wire is stretched ...........

• its length decreases and diameter increases

• its length and diameter, both increases

• its length and diameter, both decreases

• its length increases and diameter decreases

Bulk modulus measures the resistance offered by gases, liquids or solids while an attempt is made to change the ...........

• length

• shape

• volume

• area

............. is an example of elastomer

• Rubber

• Gold

• Glass

• Copper

For a metal wire, Hooke's Law is valid upto..........

• breaking point

• yield point

• elastic limit

• proportinality limit

In plastic flow region for the stress- strain curve for a wire ........

• a large stress brings about a small change in strain

• a large stress brings about a large change in strain

• a small stress brings about a small change in strain

• a small stress brings about a large change in strain

............ energy is the potential energy gained by a wire during the elongation by a stretching force.

The strain energy per unit volume is equal to........

The dimensions of stress are.......

The forces of attraction between molecules of two different materials are called as .......

• cohesive forces

• coulomb forces

• adhesive forces

• gravitational forces