If a b=-|a||b|, then a and b are - Vidyadip

MCQ

If $\bar{a} \cdot \bar{b}=-|\bar{a}||\bar{b}|$, then $\bar{a}$ and $\bar{b}$ are

A
perpendicular
B
like parallel
C
unlike parallel
D
coincident

✓

Answer

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Vectors→Vectors — all question types→Maths STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

$\int\limits^\frac{\pi^2}{4}_0\frac{\sin\sqrt{\text{x}}}{\sqrt{\text{x}}}\text{dx}$ equals:

If Rolle's theorem for $f(x)=e^x(\sin x-\cos x)$ is verified on $[\pi / 4,5 \pi / 4]$, then the value of $c$ is

The proposition $(p \wedge q) \wedge(p \rightarrow\sim q$) is

The area (in sq. units) of the region described by $\left\{(x, y): y^2 \leq 2 x\right.$ and $\left.y \geq 4 x-1\right\}$ is

If $c$ denotes the contradiction, then dual of the compound statement $\sim p \wedge(q \vee c)$ is

The area bounded by $y=1+\frac{8}{x^2}, X$-axis and the ordinates $x=2, x=4$ is

Let $f(x) = x^3 -6x^2 +15x + 3$. Then:

If an error of $k\%$ is made in measuring the radius of a sphere, then percentage error in its volume is:

The value of $\int_0^1 \ x^2 \ e^x \ d x$ is equal to

The direction cosines of AB if $A \equiv(2,-3,1)$ and $B \equiv(14,5,-3)$ are