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The angle of reflection for monochromatic X-rays from a crystal whose atomic spacing is 2.5 A° is 15°. calculate the wavelength of X-rays. |
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Answer» elength of X-rays will be 1.294 A°Explanation : GIVEN,angle of REFLECTION of x-rays , θ = 15°atomic spacing of x-rays, d = 2.5 A° = 2.5 x 10⁻¹⁰ mwe know that,2dsinθ = nλfor n = 1=> λ = 2dsinθ=> λ = 2 x 2.5 x 10⁻¹⁰ x sin15° => λ = 2 x 2.5 x 10⁻¹⁰ x 0.2588=> λ = 1.294 x 10⁻¹⁰ m = 1.294 A°Hence the WAVELENGTH of X-rays will be 1.294 A°I hope it helps. |
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