Multiplying 2î + 7ĵ by 5 gives ______

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Editor">Editor Staff asked 1 year ago

Multiplying 2î + 7ĵ by 5 gives ______
 
(a) 10î + 35ĵ
 
(b) 2î + 35ĵ
 
(c) 10î + 7ĵ
 
(d) 2î + 7ĵ
 
I have been asked this question in examination.
 
I would like to ask this question from Motion in a Plane in division Motion in a Plane of Physics – Class 11
Select the correct answer from above options 
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1 Answers
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Editor">Editor Staff answered 1 year ago

Correct choice is (a) 10î + 35ĵ
 
Explanation: When 2î + 7ĵ is multiplied by 5, both the components get multiplied by 5. Hence, the answer is 10î + 35ĵ.


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