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1
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following metal is used in the filaments of photoelectric cells that converts light energy into electric energy?
A
Tungsten
B
Copper
C
Rubidium
D
Aluminium
2
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A thin disc and a thin ring, both have mass M and radius R. Both rotate about axes through their centre of mass and are perpendicular to their surfaces at the same angular velocity. Which one of the following statements is correct?
A
The ring has higher kinetic energy.
B
The disc has higher kinetic energy.
C
The ring and the disc both have the same kinetic energy.
D
Kinetic energies of both the bodies are zero, since they are not in linear motion.
3
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
In which of the following phenomena do heat waves travel along a straight line with the speed of light?
A
Thermal conduction
B
Thermal convention
C
Thermal radiation
D
Both (a) and (c)
4
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following statements regarding Ohm's law is not correct?
A
Ohm's law is an assumption that current through a conductor is always directly proportional to the potential difference applied to it.
B
A conducting device obeys Ohm's law when the resistance of a device is independent of magnitude and polarity of applied potential difference.
C
A conducting material obeys Ohm's law when the resistance of material is independent of the magnitude and direction of applied electric field.
D
All homogeneous materials obey Ohm's law irrespective of whether the field is within range or strong.
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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
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Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
Coordinate Geometry
Coordinate System and Straight Line Circle Parabola Ellipse Hyperbola Conic Section
Calculus
Functions Limit, Continuity and Differentiability Differentiation Application of Derivatives Indefinite Integration Definite Integration Area Under The Curves Differential Equations
English
Reading Comprehension Synonyms Antonyms Cloze Rearranging Sentences in a Paragraph Idioms and Phrases Word Classes Sentence Completion Improvement of Sentence
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