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Question

Vector A=5^i+4^j+3^k is rotated around Z-axis such that its projection on the x-y plane is rotated through 180.Choose the correct option?



A

No it won't as translation of a vector doesn't change it

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B

Yes, New Vector =

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C

No, it won't as the angle is

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D

Yes, New vector =

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Solution

The correct option is D

Yes, New vector =


The projection of the vector A on the xy plane will be 5^i+4^j

After it is rotated by 180 the new projection is 5^i4^j

New vector is 5^i4^j+3^k


Physics

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