1
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The following figure represents the velocity-time graph of a moving car on a road.

Image

Which segment of the graph represents the retardation?
A
AB
B
BC
C
CD
D
None of these
2
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following statements is not correct?
A
The Kelvin scale of temperature is called the absolute scale.
B
Visible light radiation has wavelength range of 400-700 nm.
C
The capacity to do work is called power.
D
The wavelength of $$\gamma$$-rays is less than the wavelength of X-rays.
3
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A man is sitting in a train which is moving with a velocity of 60 km/h. His speed with respect to the train is
A
$${{10} \over 3}$$ m/s
B
60 m/s
C
infinite
D
zero
4
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is the SI unit of the thermal conductivity of a material?
A
Wm$$-$$1K$$-$$1
B
Wm/K
C
Wm$$-$$1/K$$-$$1
D
Js$$-$$1m$$-$$1K
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