JEE Main 2014 Physics question

In materials like aluminium and copper, the correct order of magnitude of various elastic moduli is :

(1)Young's modulii < shear modulii < bulk modulii
(2)Bulk modulii < shear modulii < Young's modulii
(3)Shear modulii < Young's modulii < bulk moduliiCorrect
(4)Bulk modulii < Young's modulii < shear modulii

Answer: (3)

Solution

For ordinary ductile metals the shear modulus is the smallest (shape change is easiest), the bulk modulus the largest (volume change is hardest), with Young's

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Question ID VK-104351