CDS Exam (I)- 2025 - General Knowledge Defence Question Paper

CDS Previous Year Question Papers Question Papers
CDS Exam (I)- 2025 - General Knowledge

CDS Exam (I)- 2025 - General Knowledge Defence Questions

21.
If your image appears to be erect, no matter how far you stand from a mirror, the mirror is likely to be:
A.
Plane
B.
Concave
C.
Convex
D.
Either plane or convex
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ANSWER :
D. Either plane or convex
22.
The rule that determines the direction of a magnetic field produced around a straight conductor carrying current is:
A.
Right-hand thumb rule
B.
Fleming's left-hand rule
C.
Fleming's right-hand rule
D.
Hund's rule
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ANSWER :
A. Right-hand thumb rule
23.
A motorcycle has initial velocity of 5 m/s. After 3 seconds, the velocity is 7 m/s. The displacement of the motorcycle in 3 seconds is:
A.
21 m
B.
18 m
C.
36 m
D.
6 m
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ANSWER :
B. 18 m
24.
The minimum power required to lift a mass of 50 kg up to a vertical distance of 8 m in 10 s is: (Take \( g = 10 m/s^{2} \))
A.
400 W
B.
40 W
C.
50 W
D.
500 W
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ANSWER :
A. 400 W
25.
Which one among the following statements is not correct?
A.
All bodies in the universe attract each other due to the gravitational force.
B.
Newton's law of gravitation follows from Newton's laws of motion.
C.
The value of g (acceleration due to gravity) at the centre of the Earth is zero.
D.
Mass and weight are measured in different units.
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ANSWER :
B. Newton's law of gravitation follows from Newton's laws of motion.
26.
A body floats in a liquid if the buoyant force is:
A.
equal to its weight.
B.
less than its weight.
C.
greater than its weight.
D.
zero.
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ANSWER :
A. equal to its weight.
27.
A metallic sphere of mass 1 kg and volume \( 2 \times 10^{-4} m^{3} \) is completely immersed in water. The buoyant force exerted by water on the sphere is:
(Given: density of water = \( 1000 kg/m^{3} \), \( g = 10 m/s^{2} \))
A.
0.5 N
B.
1.5 N
C.
2 N
D.
2.5 N
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ANSWER :
C. 2 N
28.
A light bulb rated as 60 W at 220 V has a potential difference of 110 V across its ends. The power dissipated in this light bulb is:
A.
30 W
B.
45 W
C.
15 W
D.
2 W
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ANSWER :
C. 15 W
29.
Which one among the following is used in a simple microscope?
A.
Diverging lens
B.
Concave mirror
C.
Converging lens
D.
Plane mirror
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ANSWER :
C. Converging lens
30.
The force with which the Earth attracts an object is called:
A.
Weight of the object
B.
Mass of the object
C.
Density of the object
D.
Magnitude of the object
😑 View Answer Error
ANSWER :
A. Weight of the object
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