Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Three-dimensional Geometry

Question:

The ratio, in which the yz-plane divides the line joining (2, 4, 5) and (3, 5, 7), is

Options:

–2 : 3

2 : 3

3 : 2

–3 : 2

Correct Answer:

–2 : 3

Explanation:

Let the ratio be λ : 1.

x-coordinate is $\frac{3λ+2}{λ+1}= 0$ ⇒ λ = -2/3.

Hence (A) is the correct answer.