1
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Let p and q be the position vectors of the points P and Q respectively with respect to origin O. The points R and S divide PQ internally and externally respectively in the ratio 2 : 3. If OR and OS are perpendicular, then which one of the following is correct?
2
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the moment about the point $$\widehat i + 2\widehat j - \widehat k$$ of a force represented by $$3\widehat i + \widehat k$$ acting through the point $$2\widehat i - \widehat j + 3\widehat k$$ ?
3
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If a + 2b + 3c = 0 and a $$\times$$ b + b $$\times$$ c + c $$\times$$ a = $$\lambda$$ (b $$\times$$ c), then what is the value of $$\lambda$$ ?
4
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If the vectors K and A are parallel to each other, then what is kK $$\times$$ A equal to ?
Questions Asked from Vector Algebra (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
NDA Subjects
Mathematics
Algebra
Sets, Relations and Functions Logarithms Quadratic Equations and Inequalities Sequence And Series Binomial Theorem Matrices Determinants Permutations and Combinations Probability Complex Numbers Vector Algebra Three Dimensional Geometry Statistics
Trigonometry
Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
Coordinate Geometry
Calculus
English
General Studies