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Assertion (A): The position vector of a ...

Assertion (A): The position vector of a point say P(x,y,z) is `vec(OP)=vec(r )=xhat(i)+yhat(j)+zhat(k)` and its magnitude is `|vec(r )|=sqrt(x^(2)+y^(2)+z^(2))`.
Reason ( R) : If `vec(r )=xhat(i)+yhat(j)+zhat(k)`, then coefficient of `hat(i),hat(j),hat(k)` in i.e., x,y,z are called the direction ratios of vector `vec(r)`.

A

Both A and R are true and R is NOT the correct explanation of A

B

Both A and R are true but R is NOT the correct explanation of A

C

A is true but R is false

D

A is false but R is True

Text Solution

Verified by Experts

The correct Answer is:
B
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