This set of Data Structures & Algorithms Multiple Choice Questions & Answers (MCQs) focuses on “Cross Product”. 1. Cross product is a mathematical operation performed between ________________ a) 2 scalar numbers b) a scalar and a vector c) 2 vectors d) any 2 numbers View Answer Answer: c 2. Cross product is also known as? a) scalar product b) vector product c) dot product d) multiplication View Answer Answer: b 3. What is the magnitude of resultant of cross product of two parallel vectors a and b? a) |a|.|b| b) |a|.|b| cos(180) c) |a|.|b| sin(180) d) 1 View Answer Answer: c 4. What is the general formula for finding the magnitude of the cross product of two vectors a and b with angle θ between them? a) |a|.|b| b) |a|.|b| cos(θ) c) |a|.|b| sin(θ) d) |a|.|b| tan(θ) View Answer Answer: c 5. The concept of cross product is applied in the field of computer graphics. a) true b) false View Answer Answer: a
Check this: Data Structure MCQ | Computer Science Books 6. Which of the following equals the a x b ( a and b are two vectors)? a) – (a x b) b) a.b c) b x a d) – (b x a) View Answer Answer: d 7. Cross product of two vectors can be used to find? a) area of rectangle b) area of square c) area of parallelogram d) perimeter of rectangle View Answer Answer: c 8. The resultant vector from the cross product of two vectors is _____________ a) perpendicular to any one of the two vectors involved in cross product b) perpendicular to the plane containing both vectors c) parallel to to any one of the two vectors involved in cross product d) parallel to the plane containing both vectors View Answer Answer: b 9. What will be the cross product of the vectors 2i + 3j + k and 3i + 2j + k? a) i + 2j + k b) 2i + 3j + k c) i + j – 5k d) 2i – j – 5k View Answer Answer: c Explanation: We can find the cross product of the given vectors by solving the determinant.
 10. What will be the cross product of the vectors 2i + 3j + k and 6i + 9j + 3k? a) i + 2j + k b) i – j – 5k c) 0 d) 2i – j – 5k View Answer Answer: c 11. Find the output of the following code. #include <bits/stdc++.h> using namespace std; void crossP(int A[], int B[], int cross[]) { cross[0] = A[1] * B[2] - A[2] * B[1]; cross[1] = A[0] * B[2] - A[2] * B[0]; cross[2] = A[0] * B[1] - A[1] * B[0]; } int main() { int A[] = { 1, 2, 4 }; int B[] = { 2, 3, 2 }; int cross[3]; crossP(A, B, cross); for (int i = 0; i < 3; i++) cout << cross[i] << " "; return 0; } a) 1 2 5 b) -1 -5 -3 c) -6 -8 -1 d) -8 -6 -1 View Answer Answer: d 12. Which of the following operation will give a vector that is perpendicular to both vectors a and b? a) a x b b) a.b c) b x a d) both a x b and b x a View Answer Answer: d Sanfoundry Global Education & Learning Series – Data Structures & Algorithms. To practice all areas of Data Structures & Algorithms, here is complete set of 1000+ Multiple Choice Questions and Answers. Next Steps:
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The dot product of two vectors a and B with the angle of 90 degree is equal to mcq
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