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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
- In a potentiometer experiment, the balancing with a cell is at length 240 cm.
- The threshold frequency for a photosensitive metal is 3.3 x 10¹⁴ Hz.
- Time period of oscillation of a magnet is 2 sec. When it is remagnetised
- A cord is wound round the circumference of wheel of radius
- A spherical planet has a mass Mp and diameter Dp. A particle of mass
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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