दो सरल रेखाओ के दिक् अनुपात `l_(1),m_(1),n_(1)" और "l_(2),m_(2),n_(2)` है | दोनों सरल रेखाएं परस्पर लमब होगी यदिA. `l_(1)l_(2)+m_(1)m_(2)+n_(1)n_(2)=0`B. `l_(1)l_(2)+m_(1)m_(2)+n_(1)n_(2)=1`C. `(l_(1))/(l_(2))=(m_(1))/(m_(2))=(n_(1))/(n_(2))`D. `(l_(1))/(l_(2))+(m_(1))/(m_(2))+(n_(1))/(n_(2))=0`

दो सरल रेखाओ के दिक् अनुपा�

1.	दो सरल रेखाओ के दिक् अनुपात `l_(1),m_(1),n_(1)" और "l_(2),m_(2),n_(2)` है \| दोनों सरल रेखाएं परस्पर लमब होगी यदिA. `l_(1)l_(2)+m_(1)m_(2)+n_(1)n_(2)=0`B. `l_(1)l_(2)+m_(1)m_(2)+n_(1)n_(2)=1`C. `(l_(1))/(l_(2))=(m_(1))/(m_(2))=(n_(1))/(n_(2))`D. `(l_(1))/(l_(2))+(m_(1))/(m_(2))+(n_(1))/(n_(2))=0`
Answer» Correct Answer - A