A) 0.01 cm
B) (2) 0.1 cm
C) 0.5 cm
D) 1 cm
Correct Answer: B
Solution :
[b] \[T\propto \sqrt{l}\] \[l=1\] |
\[\frac{\Delta T}{l}\,=\frac{1}{2}\,\,\frac{\Delta l}{l}\,\,\,\,\,\,\,\,\,\,\,\,\,\Delta l={{r}_{1}}-{{r}_{2}}\] |
\[5\times {{10}^{-4}}\,=\frac{1}{2}\,\frac{{{r}_{1}}-{{r}_{2}}}{1}\] |
\[{{r}_{1}}-{{r}_{2}}\,=10\times {{10}^{-4}}\] |
\[{{10}^{-3}}\,m={{10}^{-1}}\,cm\,=0.1\,cm\] |
You need to login to perform this action.
You will be redirected in
3 sec