Physics And Measurement Question 351
Question: To determine the Young’s modulus of a wire, the formula is $ Y=\frac{F}{A}:\frac{L}{\Delta L}; $ where $ L $ = length, $ A= $ area of cross-section of the wire, $ \Delta L= $ change in length of the wire when stretched with a force $ F $ . The conversion factor to change it from CGS to MKS system is
[MP PET 1983]
Options:
A) 1
B) 10
C) 0.1
D) 0.01
Show Answer
Answer:
Correct Answer: C
Solution:
$ Y=\frac{F}{A}.\frac{L}{\Delta L} $ = $ \frac{dyne}{cm^{2}}=\frac{{{10}^{-5}}N}{{{10}^{-4}}m^{2}}=0.1N/m^{2} $
