1
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The flash of lightning is seen before the thunderstorm is heard. It verifies that
A
sound travels much faster than light
B
light travels much faster than sound
C
light and sound both travel with same speed
D
intensity of flash of lightning is very high during thunderstorm
2
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The potential difference between the two end terminals of an electric heater is 220 V and the current through it is 0.5 A. What would be the current through the heater if the potential difference across the terminals of the heater is reduced to 120 V?
A
1.0 A
B
0.5 A
C
0.27 A
D
0.7 A
3
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The heating element in an electric iron is usually made of
A
Constantan
B
Tungsten
C
Nichrome
D
Copper
4
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Sita, 1.5 m high, stands before a plane mirror fixed on a wall to view her full image. What should be the minimum height of the plane mirror so that Sita can view her image fully?
A
0.50 m
B
0.35 m
C
0.75 m
D
0.25 m
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