Practice question
Question
A 3kg particle moves with velocity v\=2i^+3j^m/s at r\=4i^m. What is the z-component of its angular momentum?
Explanation
L = r×p = |i^j^k^400230| = k^(4×3−0×2) = 12k^kg m2/s. Z-component = 12kg m2/s. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 12 kg m²/s. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
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