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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 capacitors 3μF and 4μF, are individually charged across a 6 V battery.
- The oscillation of a body on a smooth horizontal surface is represented by the equation
- A stone of mass 1kg is tied to a string 4m long and is rotated at constant speed
- If in a p-n junction, a square input signal of 10 V is applied as shown, then the output
- An experiment takes 10 minutes to raise temperature of water from 0⁰C to 100⁰C
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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