Which of the following rods of same material undergoes maximum elongation

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 .

admin:

Related Questions

  1. Sand is being dropped on a conveyor belt at the rate of M kg/s. The force necessary
  2. The dimensional formula for Young’s modulus is
  3. A spherical shell of radius 10cm is carrying a charge q. If the electric potential
  4. A simple pendulum oscillates in a vertical plane. When it passes through the mean
  5. Monochromatic light of frequency 6.0 x 10¹⁴ Hz is produced by a laser. The power emitted