1
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The graph between current (I) and voltage (V) for three linear resistor 1, 2 and 3 is given below :

Image

If R1, R2 and R3 are the resistances of these resistors, then which one of the following is correct?
A
R1 > R2 > R3
B
R1 < R3 < R2
C
R3 < R1 < R2
D
R3 > R2 > R1
2
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following statements about a microscope and a telescope.

1. Both the eyepiece and the objective of a microscope are convex lenses.

2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece.

3. The magnification of a telescope increases with the increase in focal length of its objective.

4. The magnification of a microscope increases with the increase in focal length of its objective.

Which of the statement(s) given above are correct?
A
1 and 3
B
1 and 4
C
2, 3 and 4
D
1, 2 and 3
3
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A planet has a mass M1 and radius R1. The value of acceleration due to gravity on its surface is g1.

There is another planet 2, whose mass and radius both are two times that of the first planet. Which one of the following is acceleration due to gravity on the surface of planet 2 ?
A
g1
B
2g1
C
g1 / 2
D
g1 / 4
4
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The wavelength of X-rays is of the order of
A
1 $$\mathop A\limits^o $$
B
1 $$\mu$$m
C
1 mm
D
1 cm
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