1
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Let us consider a copper wire having radius r and length l. Let its resistance be R. If the radius of another copper wire is 2r and the length is l/2, then the resistance of this wire will be
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Basic scientific principle behind a nuclear reactor is
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Who among the following has explained the phenomenon of photoelectric effect?
4
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Two metallic wires A and B are made using copper. The radius of wire A is r while its length is l. A DC voltage V is applied across the wire A, causing power dissipation P. The radius of wire B is 2r and its length is 2l and the same DC voltage V is applied across it causing power dissipation P1. Which one of the following is the correct relationship between P and P1 ?
Questions Asked from Physics (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