Home
Class 11
PHYSICS
Two vectors vecA and vecB are such that ...

Two vectors `vecA` and `vecB` are such that `vecA+vecB=vecA-vecB`. Then

A

`vecA*vecB`

B

`vecA xx vecB = vec0`

C

`vecA= vec0`

D

`vecB= vec0`

Text Solution

Verified by Experts

The correct Answer is:
3
`(sqrt(F^(2) + F^(2) + 2F^(2)costheta ))^(2)= 3(F) (F)`
`2F^(2) + 2F^(2) costheta = 3F^(2)`
`costheta = (1)/(2) rArr theta = 60^(@)`
Promotional Banner

Topper's Solved these Questions

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN|Exercise EXERCISE-IV ASSERTION & REASON|11 Videos

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN|Exercise EXERCISE-II AIPMT/NEET & AIIMS (2006- 2018)|6 Videos

  • CENTRE OF MASS

    ALLEN|Exercise EXERCISE-V B|19 Videos

Similar Questions

Explore conceptually related problems

If vectors vecA and vecB are such that |vecA+vecB|= |vecA|= |vecB| then |vecA-vecB| may be equated to

Find |veca-vecb| , if two vectors veca and vecb are such that |veca|=2,|vecb|=3 and veca.vecb=4 .

Find |veca-vecb| , if two vector veca and vecb are such that |veca|=4,|vecb|=5 and veca.vecb=3

For any two vectors veca and vecb prove that |veca+vecb|lt+|veca|+|vecb|

For any two vectors veca and vecb prove that |veca.vecb|<=|veca||vecb|

If theta is the angle between any two vectors veca and vecb , then |veca.vecb|=|veca xx vecb| when theta is equal to

If veca , vecb and vecc are three vectors such that vecaxx vecb =vecc, vecb xx vecc= veca, vecc xx veca =vecb then prove that |veca|= |vecb|=|vecc|

Three vectors vecA, vecB and vecC satisfy the relation vecA. vecB=0 and vecA. vecC=0. The vector vecA is parallel to

If the vectors veca, vecb, and vecc are coplanar show that |(veca,vecb,vecc),(veca.veca, veca.vecb,veca.vecc),(vecb.veca,vecb.vecb,vecb.vecc)|=0

The two vectors vecA and vecB are drawn from a common point and vecC=vecA+vecB . Then, the angle between vecA and vecB is