refer your physics book

youngs modulus is nothing,the ratio of longitudinal stress and longitudinal strain. consider a cube box in which if we give force on all 6 sides,the box decrease in volume which is known as bulk modulus. if the box moves tangentially,it is known as rigidity modulus. if you have to discuss with me or if my point of view is wrong or if u want to say anything to me,just go to my email id annalakshmi31501@gmail.com.