A) \[{{10}^{-15}}g\]
B) \[3.0\,\times {{10}^{8}}s\]
C) \[3.33\,\times {{10}^{-24}}s\]
D) \[3.3\,\times {{10}^{-7}}s\]
Correct Answer: C
Solution :
One light fermi is time taken by light to travel a distance of 1 fermi ie, \[{{10}^{-15}}m.\] As \[t=\frac{1}{v}\] \[\therefore \] 1 light Fermi \[=\frac{{{10}^{-15}}}{3\times {{10}^{8}}}\] \[=\frac{1\times {{10}^{-23}}}{3}\] \[=0.333\times {{10}^{-23}}\] \[=3.33\times {{10}^{-24}}s\]
You need to login to perform this action.
You will be redirected in
3 sec
