1
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one among the following is true for the speed of sound in a given medium?
A
Speed of sound remains same at all frequencies
B
Speed of sound is faster at higher frequencies
C
Speed of sound is slower at higher frequencies
D
Speed of sound is slower at higher wavelengths
2
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following telescopes contains only mirrors?
A
Galilean telescope
B
Keplerian telescope
C
Newtonian telescope
D
Schmidt telescope
3
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following is not an igneous rock?
A
Granite
B
Slate
C
Basalt
D
Gabbro
4
NDA General Ability 16 April 2023
MCQ (Single Correct Answer)
+4
-1.33
Change Language

Which of the following statements is/are correct?

1. Hypocenter is the point on the surface of the Earth, nearest to the focus.

2. Velocity of earthquake waves is higher in denser materials.

3. P waves move faster and are the first to arrive at the surface of the Earth.

Select the correct answer using the code given below:

A
1 and 2
B
2 and 3
C
1 and 3
D
3 only
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