JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

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Application +4 | -1

Given, a straight lines and a fixed point

O

, a straight line is drawn through

O

meeting lines in the points

R_1, R_2, R_3, \ldots, R_n

and on it a point

R

is taken such that

\frac{n}{O R}=\frac{1}{O R_1}+\frac{1}{O R_2}+\ldots+\frac{1}{O R_n}

, then the locus of

R

View answer and explanation

Correct option: A

a straight line

Option A (a straight line) is correct because the locus of R, derived from the given harmonic mean condition, results in a linear equation.

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