Elasticity

Question 1

if the deformation is in the elastic limit then

Answer 1

the body regains it’s shape

Question 2

Stress

Answer 2

An internal restoring force per unit area of cross section

Question 3

Stress is denoted by

Answer 3

sigma

Question 4

Strain

Answer 4

Change in unit size

Question 5

Strain is denoted by

Answer 5

epsilon

Question 6

Hooke’s Law

Answer 6

For small deformations, stress is proportional to strain

Question 7

Young’s modulus

Answer 7

Fl/A delta l

Question 8

Bulk modulus

Answer 8

minus p upon (delta V by V)

Question 9

Compressibility

Answer 9

1 by B i.e. Bulk modulus