Two lines A and B of an X-ray give second order reflection maximum at – InterviewSolution

1.	Two lines A and B of an X-ray give second order reflection maximum at a glancing angle of 60∘ and third order reflection maximum at an angle of 30∘ respectively from the face of the same crystal. If the wavelength of line B is 0.25 nm, then the wavelength of line A will be -
Answer» Two lines $A$ and $B$ of an X-ray give second order reflection maximum at a glancing angle of $60^{\circ}$ and third order reflection maximum at an angle of $30^{\circ}$ respectively from the face of the same crystal. If the wavelength of line $B$ is $0.25 nm$ , then the wavelength of line $A$ will be -

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