A student performs an experiment to determine the Young’s modulus of a wire

A student performs an experiment to determine the Young’s modulus of a wire, exactly 2 m long, by Searle’s method. In a particular reading, the student measures the extension in the length of the wire to be 0.8 mm with an uncertainty of ±0.05 mm at a load of exactly 1.0 kg. The student also measures the diameter of the wire to be 0.4 mm with an uncertainty of ±0.01 mm. Take g=9.8 m/s² (exact). The Young’s modulus obtained from the reading is

Options

(a) (2.0±0.3)x10¹¹ N/m²
(b) (2.0±0.2)x10¹¹ N/m²
(c) (2.0±0.1)x10¹¹ N/m²
(d) (2.0±0.05)x10¹¹ N/m²

Correct Answer:

(2.0±0.2)x10¹¹ N/m²

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. A concave lens of focal length f forms an image which is 1/3 times the size
  2. A cord is wound round the circumference of wheel of radius
  3. The molecular weight of a gas is 44. The volume occupied by 2.2 g of this gas
  4. A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
  5. A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by