Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A student performs an experiment to determine the Young's modulus of a wire exactly 2cm 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 ࢱ 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 ࢱ 0.01 mm. Take g = 9.8 m/s 2 (exact). The Young's modulus obtained from the reading is -
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
= 
+ 
= 2 
+ 
= 2× 0.025 + 0.0625
= 0.05 + 0.0625 = 0.1125
So 
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