In a hexagonal close packed (hcp) struct...

In a hexagonal close packed (hcp) structure of spheres, the fraction of the volume occupied by the sphere is A. In a cubic close packed structure, the fraction is B . The relation for A and B is

A

A=B

B

`A lt B`

C

`A gt B`

D

A is equal to the fraction is a simple cubic lattice.

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The correct Answer is:

A

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