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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 equation of state for 5 g of oxygen at a pressure P and temperature T,
- A radioactive substance has a half-life of four months. Three-fourth of substance
- To obtain a p-type semiconductor, germanium must be doped with
- When a piece of metal is illuminated by a monochromatic light of wavelength λ,
- The acceleration due to gravity at a place is π² m/sec². Then the time period
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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