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NEET 2015 Physics and Chemistry Paper

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Question : 2 of 91

Marks: +1, -0

If vectors

=cos‌ω‌t‌

are functions of time, then the value of t at which they are orthogonal to each other is

t=‌
π
ω
t=0
t=‌
π
4ω
t=‌
π
2ω

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