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Vector Algebra question

2025 · 7 Apr · Shift 2 · Q41
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  5. /2025 · 7 Apr · Shift 2 · Q41

Vector Algebra question

2025 · 7 Apr · Shift 2 · Q41

JEE MainMathematicsVector AlgebraMCQ+4 / −1
Let a⃗\vec{a}a and b⃗\vec{b}b be the vectors of the same magnitude such that ∣a⃗+b⃗∣+∣a⃗−b⃗∣∣a⃗+b⃗∣−∣a⃗−b⃗∣=2+1.\frac{|\vec{a} + \vec{b}| + |\vec{a} - \vec{b}|}{|\vec{a} + \vec{b}| - |\vec{a} - \vec{b}|} = \sqrt{2} + 1.∣a+b∣−∣a−b∣∣a+b∣+∣a−b∣​=2​+1. Then ∣a⃗+b⃗∣2∣a⃗∣2\frac{|\vec{a} + \vec{b}|^2}{|\vec{a}|^2}∣a∣2∣a+b∣2​ is :
  1. A
    2 + 2\sqrt{2}2​
  2. B
    2 + 4 2\sqrt{2}2​
  3. C
    4 + 2 2\sqrt{2}2​
  4. D
    1 + 2\sqrt{2}2​
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