What is the magnitude of vector -3i + 5j: - Vidyadip

MCQ

What is the magnitude of vector $-3i + 5j:$

✓
$\sqrt{34}$
B
$\sqrt{32}$
C
$\sqrt{8}$
D
$\sqrt{16}$

✓

Answer

Correct option: A.

$\sqrt{34}$

Vector$, V = -3i + 5j$
Magnitude of the vector$, V$
$\mid\text{v}\mid=\sqrt{{(-3)^2}+5^2}$
$=\sqrt{(9+25)}$
$=\sqrt{34}$

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