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1
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
What is the magnification produced by a concave lens of focal length 10 cm, when an image is formed at a distance of 5 cm from the lens?
A
2.0
B
1.0
C
0.5
D
0.33
2
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
A wooden box of mass 2 kg and dimensions (30 cm × 15 cm × 10 cm) is placed on a table with sides 30 cm and 10 cm touching the tabletop. Which one of the following is the approximate pressure exerted on the table?
A
111.1 N/m2
B
222.2 N/m2
C
333.3 N/m2
D
666.6 N/m2
3
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33

Why are the tyres of aircrafts made of conducting rubber?

1. So that the charge accumulated on the aircraft in flight, by rubbing the air, can easily be transferred to ground on landing.

2. So that the charge accumulated due to the operation of various electronic equipments in the aircraft in flight can easily be transferred to ground on landing.

Select the correct answer using the code given below.
A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2
4
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following statements with respect to Global Positioning System (GPS) is not correct?
A
It is based on network of satellites orbiting above the Earth.
B
It is based on the system of triangulation.
C
GPS receivers provide location in terms of latitude, longitude and altitude.
D
It provides information exclusively for military operations.
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