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The packing efficiency of the two dimens...

The packing efficiency of the two dimensional square unit cell shown below is:

A

`39.27%`

B

`68.02 %`

C

`74.05%`

D

`78.54%`

Text Solution

Verified by Experts

The correct Answer is:
D
Packing efficiency
`=("Area covered by particle")/("Total area")`
`=(2pir^(2))/((2sqrt(2)r)^(2))=pi/4`
`=(3.142)/4xx100=78.55%`
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