1
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33

Inhabitants are unaware of the speed of rotation of the planet Earth because

1. the angular velocity is constant for each place on the Earth's surface

2. the atmosphere rotates with the Earth

3. there are no nearby objects, either stationary or moving at a rate different from that of the Earth

Which of the above is/are the correct explanation(s)?
A
1 only
B
1 and 2 only
C
2 and 3 only
D
1, 2 and 3
2
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
The twinkling of a star is due to the atmospheric
A
diffraction of starlight
B
reflection of starlight
C
refraction of starlight
D
Scattering of starlight
3
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
A mass M is dragged by a pulley on a horizontal plane by a force anti-parallel to its displacement. The work done in pulling the mass M is
A
zero
B
positive
C
infinite
D
negative
4
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
A 5 N force is defined when a mass of 10 kg is accelerated with
A
5.0 cm/s2
B
0.5 m/s2
C
0.5 cm/s2
D
5.0 m/s2