The reciprocal of the distance between two points, one on each of the lines $\frac{x - 2}{3} = \frac{y - 4}{2} = \frac{z - 5}{5}$ and $\frac{x - 1}{2} = \frac{y - 2}{3} = \frac{z - 3}{4}$

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

is having minimum value $5 \sqrt{3}$

Cannot be greater than 78

Cannot be less than 9

Cannot be $2 \sqrt{19}$

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The shortest distance (SD) =

$\frac{|\begin{array}{ccc} 21 & 4 - 2 & 5 - 3 \\ 2 & 3 & 4 \\ 3 & 2 & 5 \end{array}|}{|\begin{array}{ccc} i & j & k \\ 2 & 3 & 4 \\ 3 & 2 & 5 \end{array}|} = \frac{1}{\sqrt{78}} So, \frac{1}{S D} = \sqrt{78}$

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!