Same chapter3 marksDifficulty: Medium
Find the unit vector in the direction of 3i + 4k.
Vectors
3 marksDifficulty: Medium
State the geometrical meaning of the scalar and the vector product of two vectors.
Original Khojo Papers practice question — not from a past board paper.
Answer
The scalar product gives the product of the magnitude of one vector and the projection of the other on it, and it is zero when the vectors are perpendicular. The vector product gives a vector perpendicular to both, whose magnitude is the area of the parallelogram they span, and it is zero when the vectors are parallel.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The direction of the vector product is given by the right-hand rule.
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