Physics, asked by arnav2410, 11 months ago

What is the meaning of question 3

Attachments:

RudrakshiNanda: sry out of my knowledge

Anonymous: c option

Anonymous: unit vector is defined as the vector by its own magnitude

Answers

Answered by meshivanikashyap

let me make it clear unit vector means a/mod of a

here a=i+j

mod of i+j require the formula under root a sq.+b sq.+2ab cos titha here titha will be angle between x nd y axis =90

i+j/root 2

arnav2410: I want to know what does the question mean but thanks for the effort and your is correct

meshivanikashyap: is it clear now

arnav2410: Yes

Answered by piyushsp8017

Answer:

The unit vector along i^+j^ is

$u = \frac{i + j}{ |i + j| }$

$= \frac{1}{ \sqrt{2} } (i + j)$

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