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MHT CET 2026 (11 Apr, Shift 2) · Scalar (Dot) Product

Scalar (Dot) Product question from MHT CET 2026 (11 Apr, Shift 2)

Q7MHT CET 2026 · 11 APR · SHIFT 2Easy

Scalar (Dot) Product

The vectors (A⃗+B⃗)(\vec{A} + \vec{B}) and (A⃗−B⃗)(\vec{A} - \vec{B}) are perpendicular to each other. This is possible under the condition

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Answer: (a)

  1. (A⃗+B⃗)⋅(A⃗−B⃗)=A2−B2=0(\vec{A} + \vec{B}) \cdot (\vec{A} - \vec{B}) = A^2 - B^2 = 0
  2. So ∣A⃗∣=∣B⃗∣|\vec{A}| = |\vec{B}|, answer (a).
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