The component of i + j along j + k will be - Vidyadip

MCQ

The component of $i + j$ along $j + k$ will be

A
$\frac{{i + j}}{2}$
✓
$\frac{{j + k}}{2}$
C
$\frac{{k + i}}{2}$
D
None of these

✓

Answer

Correct option: B.

$\frac{{j + k}}{2}$

b
(b) $\left[ {(i + j)\,.\,\frac{{(j + k)}}{{\sqrt 2 }}} \right]\frac{{(j + k)}}{{\sqrt 2 }} = \frac{{(j + k)}}{2}.$

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 "M.C.Q (1 Marks)" from STD 12 - 10. vector algebra→STD 12 - 10. vector algebra — all question types→Mathematics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

If the two lines $l_{1}: \frac{ x -2}{3}=\frac{ y +1}{-2}, z =2$ and $l_{2}: \frac{x-1}{1}=\frac{2 y+3}{\alpha}=\frac{z+5}{2}$ perpendicular, then an angle between the lines $l_{2}$ and $l_{3}: \frac{1- x }{3}=\frac{2 y -1}{-4}=\frac{ z }{4}$ is

Which of the following represents collinear but not equal vectors:

The value of $\int \sec ^2(2 x+1) d x$ is

Let $A$ and $B$ be two $3 \times 3$ non-zero real matrices such that $AB$ is a zero matrix. Then.

If one pair of two unbiased dice are rolled then what is the probability of getting sum 5 ?

The value of $\int_0^{\pi / 2} \frac{\sqrt{\sin x}}{\sqrt{\sin x}+\sqrt{\cos x}} d x$ will be

The sum of the order and the degree of the differential equation $\frac{d^2 y}{d x^2}+\left(\frac{d y}{d x}\right)^3=\sin y$ is:

The differential coefficient of ${\tan ^{ - 1}}\left( {{{\sqrt {1 + {x^2}} - 1} \over x}} \right)$ with respect to ${\tan ^{ - 1}} x$ is

$\int\frac{\text{e}^{\text{x}}(1+\text{x})}{\cos^2(\text{x}\text{e}^{\text{x}})}\text{ dx}=$

Consider the binary operation * defined on Q − {1} by the rule a * b = a + b − ab for all a, b ∈ Q − {1}. The identity element in Q − {1} is: