Monochromatic X-rays having energy 2.8 × 10⁻¹⁵ J diffracted (first order) from (200) plane of a cubic crystal… · ABC26PH0803
Subject: Physical Chemistry · Chapter: Solid State Chemistry · Topic: Solid State – General · Exam: JAM 2001-2022 · Marks: 2 · Difficulty: Medium
Monochromatic X-rays having energy $2.8 \times 10^{-15}$ J diffracted (first order) from (200) plane of a cubic crystal at an angle $8.5^{\circ}$. The length of unit cell in Å of the crystal (rounded off to one decimal place) is (Given: Planck's constant, $h = 6.626 \times 10^{-34}\ \mathrm{J\,s}$; $c = 3.0 \times 10^{8}\ \mathrm{m\,s^{-1}}$)
(a)9.8
(b)4.8
(c)2.4
(d)3.4
Answer
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