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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
- Two wires of equal length and equal diameter and having resistivities ρ₁ and ρ₂
- The radius of germanium nuclide is measured to be twice the radius of ₄⁹Be.
- A plumb line is suspended form a ceiling of a car moving with horizontal acceleration
- If the focal length of a concave mirror is 50 cm, then where should the object
- The velocity v of waves produced in water depends on their wavelength λ, the density
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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