Subject: Physical Chemistry · Chapter: Solid State Chemistry · Topic: Solid State – General · Exam: JAM 2001-2022 · Marks: 2 · Difficulty: Medium
Monochromatic X-rays having energy $2.8 \times 10^{-15} \mathrm{J}$ diffracted (first order) from (200) plane of a cubic crystal at an angle $8.5^{\circ}$. The length of unit cell in $\AA$ of the crystal (rounded off to one decimal place) is (Given: Planck's constant, $\mathrm{h}=6.626 \times 10^{-34} \mathrm{J} \mathrm{s} ; \mathrm{c}=3.0 \times 10^{8} \mathrm{m} \mathrm{s}^{-1}$ )
(a)9.8
(b)4.8
(c)2.4
(d)3.4
Answer
SELF-PRACTICE — the source book printed no answer.
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