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प्रश्न
A displacement vector, at an angle of 30° with y-axis has an x-component of 10 units. Then the magnitude of the vector is ______.
पर्याय
5.0
10
11.5
20
MCQ
रिकाम्या जागा भरा
उत्तर
A displacement vector, at an angle of 30° with y-axis has an x-component of 10 units. Then the magnitude of the vector is 20.
Explanation:
Let `vecR` be the given vector. X-component of the vector `vecR`.
= `|vecR| cos60^circ = 10`
`|vecR| = 10/(cos60^circ) = 20`
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