1.

The second order Grag diffraction of X-rays with lamda=1.0 Å from a set of parallel planes in a metal occurs at an angle of 60^(@). The distance between the scattering planes in the crystal is

Answer»

0.575 Å
1.00 Å
2.00 Å
1.15 Å

Solution :`n lamda=2dsin theta,`
`2xx1`Å`=2xxd SIN 60 implies d=1.15` Å `because (sin60=(SQRT(3))/(2))`


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