question_answer

Length of the chord cutoff by \[y=2x+1\] from the circle \[{{x}^{2}}+{{y}^{2}}=4\] is equal to _______.

A)  \[2\sqrt{\frac{13}{7}}\]                        

B)  \[2\sqrt{\frac{19}{5}}\]

C)  \[3\sqrt{\frac{13}{7}}\]            

D)  \[3\sqrt{\frac{19}{5}}\]

E)  None of these