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 61–63 of 175. Imported answers require review unless explicitly marked reviewed.
Question 61
Open questionXE-CNAT2 marksNeeds review
The Young’s modulus of a quartz piezoelectric crystal is 100 GPa. The uniaxial stress required to change its polarization by 1% is (give absolute value in GPa) ________ (rounded off to nearest integer)
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Open questionXE-CNAT2 marksNeeds review
A one-dimensional nanowire has a linear electron density of
. The Fermi energy of the system is (in eV) ______ (rounded off to two decimal places)Given:
where ‘m’ is the mass of an electronLog in to check the answer
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Open questionXE-CNAT2 marksNeeds review
Two moles of a monoatomic ideal gas at 10 atm and 300 K is expanded isothermally and reversibly to a pressure of 2 atm. The absolute value of work done by the system is (in kJ) __________ (rounded off to two decimal places)
Given: R = 8.31 J mol⁻¹ K⁻¹, 1 atm = 101 kPa
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