Class 11 Mathematics · Chapter 14 · Test 3
Cross Product and Moment
43 MCQs Covers the definition and properties of the cross product, unit-vector products, perpendicular vectors and unit normals (Ex 14.3).
43 questions · 35 min · 43 marks
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Sample questions
The first 5 of 43. Try each one, then tap to see the answer.
Question 1
The cross product u × v is defined as
- A|u||v| cos θ
- B|u||v| sin θ n̂
- C|u||v| sin θ
- D|u| + |v| sin θ n̂
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Answer: B
n̂ is the unit vector perpendicular to the plane of u and v.
Question 2
The cross product of two vectors is a
- Ascalar
- Bunit scalar
- Cnumber
- Dvector
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Answer: D
It is also called the vector product.
Question 3
For any vectors u and v, u × v =
- A−(v × u)
- Bv × u
- Cu · v
- D0
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Answer: A
The cross product is anti-commutative.
Question 4
i × i equals
- A1
- Bk
- C0
- Di
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Answer: C
sin 0° = 0.
Question 5
i × j equals
- A−k
- Bk
- Cj
- D0
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Answer: B
Right-hand rule.
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