1
NDA General Ability 3 September 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language

How many of the following materials can be attracted by a magnet?

1. Plastic

2. Carbon

3. Aluminium

4. Stainless Steel

Select the correct answer using the code given below:

A
1
B
2
C
3
D
None
2
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Two identical spring balances S1 and S2 are connected one after the other and are held vertically as shown in the figure. A mass of 10 kg is hanging from S2. If the readings on S1 and S2 are W1 and W2 respectively, then :

NDA General Ability 16 April 2023 General Science - Physics Question 124 English

A
W1 = 5 kg and W2 = 10 kg
B
W1 = 10 kg and W2 = 5 kg
C
W1 = 5 kg and W2 = 5 kg
D
W1 = 10 kg and W2 = 10 kg
3
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
A stone is thrown horizontally from the top of a 20 m high building with a speed of 12 m/s. It hits the ground at a distance R from the building. Taking g = 10 m/s2 and neglecting air resistance will give :
A
R = 12 m
B
R = 18 m
C
R = 24 m
D
R = 30 m
4
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
A sphere of volume V is made of a material with lower density than water. While on Earth, it floats on water with its volume f1V (f1 < 1) submerged. On the other hand, on a spaceship accelerating with acceleration a < g (g is the acceleration due to gravity on Earth) in outer space, its submerged volume in water is f2V. Then:
A
f2 = f1
B
f2 = (1 - $\frac{a}{g}$) f1
C
f2 > f1
D
f2 = $\frac{a}{g}$ f1
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