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|vecP|=|vecQ|,|vecP +vecQ|=|vecP -vecQ|....

`|vecP|`=`|vecQ|`,`|vecP +vecQ|`=`|vecP -vecQ|`.Find the angle between P and Q

A

`45^@`

B

`90^@`

C

`135^@`

D

`150^@`

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-PHYSICS SECTION B
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