1
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Shown in the figure are two plane mirrors XY and YZ (XY ⊥ YZ) joined at their edge. Also shown is a light ray falling on one of the mirrors and reflected back parallel to its original path as a result of this arrangement. The two mirrors are now rotated by an angle θ to their new position X'YZ', as shown. As a result the new reflected ray is at an angle α from the original reflected ray. Then :
2
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
A railway wagon (open at the top) of mass M1 is moving with speed v1 along a straight track. As a result of rain, after some time it gets partially filled with water so that the mass of the wagon becomes M2 and speed becomes v2. Taking the rain to be falling vertically and the water stationery inside the wagon, the relation between the two speeds v1 and v2 is :
3
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following statements is not true for a flute, a musical instrument?
4
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
A positive charge is moving towards south in a space where magnetic field is pointing in the north direction. The moving charge will experience :
Paper analysis
Total Questions
English
50
General Science
52
General Studies
48
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