What is the equation of the plane passing through the point (1, 1, 1) and perpendicular to the line whose direction ratios are 3, 2, 1 ?

NDA 2025 Mathematics question

What is the equation of the plane passing through the point and perpendicular to the line whose direction ratios are ?

Answer: (B)

A plane perpendicular to a line has the line's direction ratios as its normal, so the normal is

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Question ID VK-030076