JEE Main 2018 (Online) 16th April Morning Slot

MCQ (Single Correct Answer)

-1

Let $$\overrightarrow A $$ = $$\left( {\widehat i + \widehat j} \right)$$ and, $$\overrightarrow B = \left( {2\widehat i - \widehat j} \right).$$ The magnitude of a coplanar vector $$\overrightarrow C $$ such that $$\overrightarrow A .\overrightarrow C = \overrightarrow B .\overrightarrow C = \overrightarrow A .\overrightarrow B ,$$ is given by :

$$\sqrt {{{10} \over 9}} $$

$$\sqrt {{{5} \over 9}} $$

$$\sqrt {{{20} \over 9}} $$

$$\sqrt {{{9} \over 12}} $$

AIEEE 2004

MCQ (Single Correct Answer)

-1

If $$\overrightarrow A \times \overrightarrow B = \overrightarrow B \times \overrightarrow A $$, then the angle beetween A and B is

$${\pi \over 2}$$

$${\pi \over 3}$$

$$\pi $$

$${\pi \over 4}$$

JEE Main Subjects