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Practice question

MCQ

Question

Two vectors are given as a\=2i^+3j^ and b\=−3i^+4j^. What is the magnitude of their vector product a×b?

Options

Choose one · Correct answer highlighted

Explanation

a×b = |i^j^k^230−340| = k^(2×4−3×(−3)) = k^(8+9) = 17k^. Magnitude = |a×b| = 17. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 17. This satisfies dimensional consistency and physical conditions given, so option C is scientifically correct.

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