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A body is under stress F and has Young’s modulus Y, then the energy stored per unit volume equals to
Options
(a) F²/2Y
(b) Y/2F²
(c) 2Y/F²
(d) 2F²/Y
Correct Answer:
F²/2Y
Explanation:
Energy stored per unit volume,
u = (1/2) x stress x strain
= (1/2) x stress x [stress/Young’s modulus]
( ·.· Young’s modulus = stress/strain)
= (1/2) x F x (F/Y) = F²/2Y.
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Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If in a p-n junction, a square input signal of 10 V is applied as shown, then the output
- In the Young’s double slit experiment, a point P on the central bright fringe
- The photoelectric threshold frequency of a metal is ν. When light of frequency 4ν
- The coefficient of performance of a refrigerator is 5. If the temperature inside
- Masses of 3 wires of same metal are in the ratio 1:2:3 and their lengths
Topics: Properties of Bulk Matter (130)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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