Question $1.$ Write appropriate equations, mentioning all the terms involved:

a$)$ Anisotropy ratio

$10$

b$)$ Generalized Hooke's law for anisotropic solid

c$)$ Volume change during elastic deformation

d$)$ Young's modulus in direction hkl

e$)$ CRSS

Question $2.$ Derive and discuss relationship between:

$[10]$

a$)$ Young's Modulus of Elasticity and Bond Length

b$)$ Theoretical shear stress for onset of plastic deformation