1.

The component of a vector r along x-axis will have a maximum value if (1) vector r is along + ve y-axis (2) vector r  makes an angle of 45° with the x-axis (3) vector r is along +ve x-axis (4) vector r  is along –ve y-axis

Answer»

Correct option (3) vector r is along +ve x-axis    

Explanation:

rx = r cos θ  

rx is maximum if θ = 0



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