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  • The component of a vector r along X-axis will have maximum value if (a) r is along positive Y-axis (b) r is along positive X-axis (c) r makes an angle of 45° with the X-axis (d) r is along negative Y-axis

The component of a vector r along X-axis will have maximum value if

(a) r is along positive Y-axis

(b) r is along positive X-axis

(c) r makes an angle of 45° with the X-axis

(d) r is along negative Y-axis

Answers (1)

The answer is the option (b) r is along positive X-axis

Explanation: if a vector B forms an angle \theta along the x-axis. Then its components along the x-axis can be written as B Cos θ.

The maximum value of \cos \theta =1, which is when \theta =0.

Hence, for the vector r, the maximum value will be when it is along the positive x-axis.

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