Home
Class 11
PHYSICS
Three vectors A, B and C add upto zero. ...

Three vectors A, B and C add upto zero. Find which is false.

A

`(vecA xx vecB) xx vecC` is not zero unless `vecB, vecC` are parallel.

B

`(vecA xx vecB) * vecC` is not zero unless `vecB, vecC` are parallel.

C

If `vecA, vecB, vecC` define a plane, `(vecA xx vecB) xx vecC` is in that plane.

D

`(vecAxxvecB) * vecC = |vecA||vecB||vecC| toC^(2) = A^(2) + B^(2).`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PLANE

    NCERT FINGERTIPS ENGLISH|Exercise ASSERTION & REASON|15 Videos

  • MOTION IN A PLANE

    NCERT FINGERTIPS ENGLISH|Exercise Scalars And Vectors|5 Videos

  • MOTION IN A PLANE

    NCERT FINGERTIPS ENGLISH|Exercise HOTS|6 Videos

  • MECHANICAL PROPERTIES OF SOLIDS

    NCERT FINGERTIPS ENGLISH|Exercise Assertion And Reason|15 Videos

  • MOTION IN A STRAIGHT LINE

    NCERT FINGERTIPS ENGLISH|Exercise NCERT Exemplar|6 Videos

Similar Questions

Explore conceptually related problems

Three vectors vecA,vecB and vecC add up to zero.Find which is false.

The sum of the three vectors shown in figure is zero. Find the magnitudes of the vectors vec(OB) and vec(OC) .

Given three vectors veca, vecb and vecc are non-zero and non-coplanar vectors. Then which of the following are coplanar.

The three vectors a, b and c with magnitude 3, 4 and 5 respectively and a+b+c=0, then the value of a.b+b.c+c.a is

If vec a , vec b , and vec c be non-zero vectors such that no two are collinear or ( vec axx vec b)xx vec c=1/3| vec b|| vec c| vec adot If theta is the acute angle between vectors vec b and vecc , then find the value of sin thetadot

The sum of three vectors shown in figure, is zero. (i) What is the magnitude of vector vec(OB) ? (ii) What is the magnitude of vector vec(OC) ?

Let a,b,c are three vectors of which every pair is non-collinear, if the vectors a+b and b+c are collinear with c annd a respectively, then find a+b+c.

Three vessels A,B,and C of different shapes contain a water upto the same height as shown in the figure . P_(A) ,P_(B) ,and P_(C) be the pressure exerted by the water at the bottom of the vessels A ,B and C respectively . Then

Give a condition that three vectors vec a , vec b and vec c from the three sides of a triangle. What are the other possibilities?

Give a condition that three vectors vec a , vec b and vec c from the three sides of a triangle. What are the other possibilities?