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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
- Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units
- what should be the velocity of an electron so that its momentum becomes equal
- When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy
- Imagine a new planet having the same density as that of earth but it is 3 times bigger
- What is the Q-value of the reaction? ¹H+⁷Li→⁴He+⁴He
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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