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Which of the following rods of same material undergoes maximum elongation when subjected to a given force?
Options
(a) l=1 m, d=2 mm
(b) l=2 m, d=1 mm
(c) l=1 m, d=1 mm
(d) l=2 m, d=2 mm
Correct Answer:
l=2 m, d=1 mm
Explanation:
Δl(elongation) = Fl/YA
F is same. Young modulus is same.
.·. Δl α 1/r² .
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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
- The molar specific heats of an ideal gas at constant pressure and volume are denoted
- A bar magnet of moment of inertia I is vibrated in a magnetic field of induction
- 64 drops of mercury, each charged to a potential of 10 V, are combined
- A thermally insulated rigid container contains an ideal gas heated by a filament
- In the given figure, a diode D is connected to an external resistance R=100 Ω
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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