MathsJEE Main 5 Apr 2026, Shift 2·Q15·MCQ·Moderate

3D Geometry · Image of point in line

If the distance of the point

(a, 2, 5)

from the image of the point

(1, 2, 7)

in the line

\dfrac{x}{1} = \dfrac{y-1}{1} = \dfrac{z-2}{2}

is 4, then the sum of all possible values of

a

is equal to:

(1)11
(2)9
(3)6
(4)4

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