Physics, asked by jyoshnakurvanshi1507, 11 months ago

show that scalar product of two non zero peroendicular vector is zero​

Answers

Answered by harisreeps
6

Answer:

The scalar product of two non zero perpendicular vectors is zero​

Explanation:

A vector is a physical quantity that has both magnitude and direction.

One of the multiplications of two vectors is named the scalar product

The scalar product of two vectors A and B inclined to an angle \alpha is given by the formula

A.B=/A//B/cos\alpha

the scalar product can be zero if,

  1. /A/=0
  2. /B/=0
  3. cos\alpha =0

from the question, it is given that vector A and vector B are non-zero vectors

then the only chance is cos\alpha =0

the minimum value of the angle that makes cosine zero is \alpha =90

that is the two vectors are perpendicular to each other

Answered by amitnrw
3

Shown that scalar product of two non zero perpendicular vector is zero​

Given:

  • Scaler product of two non zero vectors is Zero

To Find:

  • Prove That Vectors are perpendicular

Solution:

  • Scaler product of two vectors P and Q  is given by:
  • | P | | Q | Cosθ
  • θ is the angle between vectors P and Q

Step 1:

Equate Scaler Product to Zero

| P | | Q | Cosθ = 0

Step 2:

Non zero Vectors hence  | P | ≠ 0 , | Q | ≠ 0 So Divide both sides by | P | | Q |

Cosθ = 0

Step 3:

Use cos90° = 0 hence

θ = 90°

Angle between vectors is 90 degrees hence they are perpendicular

QED

Hence Proved

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