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Given `vec(A) = 3 hat(i) + 4 hat(j)` and `vec(B) = 6 hat(i) + 8 hat(j)`. (A) `vec(A) . Vec(B) = 50` (B) `(|vec(A)|)/(|vec(B)|) = (1)/(2)` (C ) `|vec(A)| = 5` (D) Projection vector of `vec(A)` along `vec(B)` is `3hat(i) + 4 hat(j)` Which of the following statements is correct ?A. Only A is correctB. Only A and B are correctC. Only A, B and C are correctD. All are correct |
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Answer» Correct Answer - D (A) `vec(A) . Vec(B) = 18 + 52 = 50` (B) `|A| = 5, |B| = 10` (D) `(50(6 hat(i) + 8 hat(j)))/(100) = 3 hat(i) + 4 hat(j)` |
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