I f a vector 2 +3 + 8 is perpendicular to the vector 4 … | CGP Edu

Physics Vectors Basic Mathematics MCQ (Single Correct)

I f a vector 2 +3 + 8 is perpendicular to the vector 4 – 4 + α , then the value of α is

A

–1

B

C

–

D

1

Text Solution

Verified by Experts

The correct answer is:

Two vectors must be perpendicular if their dot product is zero.

Let = 2 + 3 + 8

= 4 – 4 + a

According to the above hypothesis :

⊥

⇒ = 0 ⇒ (2 + 3 + 8 ). (– 4 +4 + a ) = 0

⇒ 8 – 12+ 8a = 0 ⇒ a = =

Prepare Smarter with CGP Edu

Get practice questions, solutions, and test series in one place.

Write a Review

Share your experience with this question and solution.

Commentary

Send your comment, doubt, correction, or feedback to admin.

Student Reviews

What students say about this solution

No reviews yet. Be the first to write a review.

Similar Questions

Explore conceptually related problems

sin 2 θ is equivalent to :

–sin θ is not equal to :

If tan θ = and θ lies in the first quadrant, the value of cos θ is :

If f( θ ) = sin θ , find f ( )

Calculate slope of shown line

Roots of the equation 2x 2 + 5x – 12 = 0, are

CG

CGP Question Assistant Question Bank + AI Help

Hi! Type your question or upload one screenshot. First I will search related questions from CGP Edu Question Bank. If none match, type YES and I will solve it with AI.

Upload only one screenshot at a time. Flow: Question Bank first → If not matched, type YES for AI solution.