Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Chemistry States of Matter
The correct Bragg's equation for a first order reflection is represented by:
1
2λ = disnθ
2
λ = 2disnθ
3
λ = d/2 sinθ
4
More than one of the above
5
None of the above