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

The ratio in which the YZ-plane divides the line joining (2,4,5) and (3,5,-4) is
  1. 2:3 internally 
  2. 3:2 internally 
  3. 3:2 externally 
  4. 2:3 externally 

Solution

Given points  (2,4,5) and (3,5,-4) 

The ratio divided by YZ plane in which it divides x1,y1,z1 & x2,y2,z2 is =-x1x2

= -23

As the ratio is negative it will divide in 2 : 3 externally.

Asked in: AP EAMCET 2021 (19 Aug Shift 1)

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