Length of the shortest normal chord of the parabola is |
|||||||

a) |
b) |
9 |
c) |
d) |
None of these |

Length of the shortest normal chord of the parabola is |
|||||||

a) |
b) |
9 |
c) |
d) |
None of these |

1 Answer

127 votes

**(a)**

Let be a normal chord where

We have

Now,

For =0 for which is minimum

Thus, units

127 votes

127