Projection of a vector vec r, = ,3hat{i}, + ,hat{j}, + ,2hat{k} on xy plane has magnitude

English

Gujarati

Hindi

3-1.Vectors

easy

The projection of a vector $\vec r\, = \,3\hat i\, + \,\hat j\, + \,2\hat k$ on the $xy$ plane has magnitude

$3$

$4$

$\sqrt {14} $

$\sqrt {10} $

Solution

Magnitude of projection of this vector on $x – y$ plane will be the square root of sum of squares of its $x – y$ components $=\sqrt{3^2+1^2}=\sqrt{10}$

Standard 11

Physics

Vector$\overrightarrow A $ makes equal angles with $x, y$ and $z$ axis. Value of its components (in terms of magnitude of $\overrightarrow A $) will be

hard

Which one of the following pair cannot be the rectangular components of force vector of $10 \,N$ ?

easy

Two vectors of magnitude $3$ & $4$ have resultant which make angle $\alpha$ & $\beta$ respectively with them $\{given\, \alpha + \beta \neq 90^o\}$

hard

Which of the following is a unit vector?

easy

A person pushes a box kept on a horizontal surface with force of $100\,N$ . In unit vector notation force $\vec F$ can be expressed as ?

medium

The projection of a vector $\vec r\, = \,3\hat i\, + \,\hat j\, + \,2\hat k$ on the $xy$ plane has magnitude

Solution

Similar Questions

Vector$\overrightarrow A $ makes equal angles with $x, y$ and $z$ axis. Value of its components (in terms of magnitude of $\overrightarrow A $) will be

Which one of the following pair cannot be the rectangular components of force vector of $10 \,N$ ?

Two vectors of magnitude $3$ & $4$ have resultant which make angle $\alpha$ & $\beta$ respectively with them $\{given\, \alpha + \beta \neq 90^o\}$

Which of the following is a unit vector?

A person pushes a box kept on a horizontal surface with force of $100\,N$ . In unit vector notation force $\vec F$ can be expressed as ?

Start a Free Trial Now