1
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The time period of a simple pendulum made by using a thin copper wire of length L is T. Suppose the temperature of the room in which this simple pendulum is placed increases by 30$$^\circ$$C. What will be the effect on the time period of the pendulum?
A
T will increase slightly
B
T will remain the same
C
T will decrease slightly
D
T will become more than 2 times
2
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following physical quantities has the same unit as that of pressure?
A
Angular momentum
B
Stress
C
Strain
D
Work
3
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following statements is correct with regard to the material of electrical insulators?
A
They contain no electrons.
B
Electrons do not flow easily through them.
C
They are crystals.
D
They have more number of electrons than the protons on their surface.
4
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following physical quantities does not affect the resistance of a cylindrical resistor?
A
The current through it.
B
Its length.
C
The resistivity of the material used in the resistor.
D
The area of cross-section of the cylinder.
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