A vector is represented by $3\,\hat i + \hat j + 2\,\hat k$. Its length in $XY$ plane is
A vector is represented by $3\,\hat i + \hat j + 2\,\hat k$. Its length in $XY$ plane is
- A
$2$
- B
$\sqrt {14} $
- C
$\sqrt {10} $
- D
$\sqrt 5 $
Similar Questions
Define scalar and vector physical quantities with their examples.
Define scalar and vector physical quantities with their examples.
How can we represent vector quantity ?
How can we represent vector quantity ?
Pick out the two scalar quantities in the following list :
force, angular momentum, work, current, linear momentum, electric field, average velocity, magnetic moment, relative velocity.
Pick out the two scalar quantities in the following list :
force, angular momentum, work, current, linear momentum, electric field, average velocity, magnetic moment, relative velocity.
The angle made by the vector $A = \hat i + \hat j$ with $x-$ axis is ....... $^o$
The angle made by the vector $A = \hat i + \hat j$ with $x-$ axis is ....... $^o$
The value of a unit vector in the direction of vector $A = 5\hat i - 12\hat j,$ is
The value of a unit vector in the direction of vector $A = 5\hat i - 12\hat j,$ is