Practice question
Question
A 1kg particle moves with velocity v\=−3i^+4j^m/s at r\=2i^m. What is the z-component of its angular momentum?
Explanation
L = r×p = |i^j^k^200−340| = k^(2×4−0×(−3)) = 8k^kg m2/s. Z-component = 8kg m2/s. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 8 kg m²/s. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
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