First order X-ray reflection `(lambda=154pm)` is maximum from a set of (2,0,0) planes of a bcc lattice was observed at `16^(0)6^(1)`. Then the edge length of unit cell is `(Sin 16^(0)6^(1)=0.2773)`A. 360pmB. 420pmC. 560pmD. 180ppm

First order X-ray reflection `(lambda=154pm)` is maximum from a set of

1.	First order X-ray reflection `(lambda=154pm)` is maximum from a set of (2,0,0) planes of a bcc lattice was observed at `16^(0)6^(1)`. Then the edge length of unit cell is `(Sin 16^(0)6^(1)=0.2773)`A. 360pmB. 420pmC. 560pmD. 180ppm
Answer» For first order reflection, n=1 `lambda=2d sin theta` `d=(lambda)/(2 sin theta)=(154)/(2xx0.2773)=280` pm `d_(((2,0,0)))=(alpha)/sqrt(2^(2)+0^(2)+0^(2))rArr a=2xx280=560` pm

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First order X-ray reflection `(lambda=154pm)` is maximum from a set of (2,0,0) planes of a bcc lattice was observed at `16^(0)6^(1)`. Then the edge length of unit cell is `(Sin 16^(0)6^(1)=0.2773)`A. 360pmB. 420pmC. 560pmD. 180ppm

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