A narrow beam of `X`-rays impinges on the natural facet of a `NaCI` single srystal, whose
Channel: Doubtnut
Date: 2020-08-30

A narrow beam of `X`-rays impinges on the natural facet of a `NaCI` single srystal, whose density is `hro = 2.16 g//cm^(3)` at a galancing angle `alpha = 60.0^(@)`. The mirror reflection from this facet produces a maximum of seond order. Find the wavelength of radiation.