1
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The focal length of a concave lens is 0.5 m. The power of the lens is 
1
+0.5 D
2
-0.5 D
3
+2.0 D
4
-2.0 D
2
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The rule to determine the direction of a force experienced by a straight current carrying conductor placed in a magnetic field which is perpendicular to it is 
1
Right-hand thumb rule
2
Fleming’s left-hand rule 
3
Fleming’s right-hand rule 
4
Hund’s rule 
3
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
One parsec in astronomical units (A.U.) is about 
1
2 × 103 A.U.
2
2 × 104 A.U.
3
2 × 105 A.U.
4
2 × 106 A.U.
4
NDA General Ability 14th September 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following statements for second law of motion is NOT correct ? 
1
The net force on a body is proportional to that body’s acceleration 
2
The net force on a body is in the same direction as the acceleration 
3
The time rate of change of momentum is equal to force 
4
The net force on a body is proportional to that body’s momentum