Wavelength Of X-Rays Falling At Glancing Angle Of 30? On A Crystal With Atmic Spacing 2 X 10-10 For The Fist Order Diffraction Is______

20×10-10m

2 X 10-10 M

0.02×10-10m

4 X 10-10 M

Wavelength Of X-Rays Falling At Glancing Angle Of 30? On A Crystal With Atmic Spacing 2 X 10-10 For The Fist Order Diffraction Is______

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