1.

If a,b and c and alpha, betaand gammaare the edges and angles of a unit cell, then an orthorhombic unit cell is described as :

Answer»

a=B`CANCEL(=)c,alpha,BETA=gamma =90^(@)`
`a cancel(=)bcancel(=)c,alpha=beta=gamma=90^(@)`
`a cancel(=)b cancel(=)c,alphacancel(=)beta cancel(=) gamma cancel(=)90^(@)`
`a=b=c,alpha=beta=90^(@),gamma =120^(@)`

ANSWER :B


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