Engineering Sciences
2023 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XE 2023 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 52–54 of 175. Imported answers require review unless explicitly marked reviewed.
Question 52
Open questionXE-CNAT1 markNeeds review
In a semiconductor, the ratio of electronic mobility to hole mobility is 10. The density of electrons and holes are
and
, respectively. If the conductivity of the material is
, then the mobility of holes is (in
): ____________ (rounded off to nearest integer)Given: Charge of an electron:
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Open questionXE-CMCQ2 marksNeeds review
A student performed X-ray diffraction experiment on a FCC polycrystalline pure metal. The following
values were calculated from the diffraction peaks.
However, the student was negligent and missed noting one of the peaks. Which one of the following Miller indices corresponds to the missing peak?
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 54
Open questionXE-CMCQ2 marksNeeds review
Match the lattice planes and directions (in Column I) with the corresponding Miller indices (in Column II):
Column I: (P), (Q), (R), (S); Column II: 1.
; 2.
; 3.
; 4.
.
Your answerChoose one option.
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