Question 15 - Practice Questions CBSE - Maths Class 12 (2023 Boards) - Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Last updated at Dec. 13, 2024 by Teachoo

(PQ) is perpendicular to (QR) . The position vectors of P, Q and R are (4i ̂+7j ̂-k ̂), (5i ̂+yj ̂+k ̂ ) and (-2i ̂+9j ̂+4k ̂ ) respectively.

What is the value of y?

A. -9

B. -8

C. 7

D. 8

Next: Question 16 → Share on WhatsApp

Transcript

(𝑷𝑸) ⃗ is perpendicular to (𝑄𝑅) ⃗. The position vectors of P, Q and R are (4𝑖 ̂+7𝑗 ̂−𝑘 ̂), (5𝑖 ̂+𝑦𝑗 ̂+𝑘 ̂ ) and (−2𝑖 ̂+9𝑗 ̂+4𝑘 ̂ ) respectively. What is the value of y? A. -9 B. -8 C. 7 D. 8

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo

Class 6

Class 7

Class 8

Class 9

Class 10

Class 11

Class 12

Courses

Interesting

Popular