3-1.Vectors
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બે સદિશોના મૂલ્ય $5\, N$ અને $12 \,N$ વચ્ચેનો ખૂણો કેટલો રાખવાથી પરિણામી સદિશનું મૂલ્ય અનુક્રમે $17\, N$, $7\, N$ અને $13\, N$ મળે?

A

$ 0^o, 180^o $ અને $ 90^o$

B

$ 0^o, 90^o $ અને $ 180^o $

C

$ 0^o, 90^o $ અને $ 90^o $

D

$ 180^o, 0^o $ અને $ 90^o $

Solution

(a) For $17\, N$ both the vector should be parallel i.e. angle between them should be zero.

For $7\, N$ both the vectors should be antiparallel i.e. angle between them should be $180^o$

For $13\, N$ both the vectors should be perpendicular to each other i.e. angle between them should be $90^o$

Standard 11
Physics

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