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1
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following statements is correct?
A
The speed of sound waves in a medium depends upon the elastic property of the medium, but not on an inertia property.
B
The sped of sound waves in a medium depends upon the inertia property of the medium, but not on an elastic property.
C
The speed of sound waves in a medium depends neither on its elastic property nor on its inertia property.
D
The speed of sound waves in a medium depends on both elastic and inertia properties of the medium.
2
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following statements is not correct?
A
Pitch of a sound is its characteristic by which we can generally differentiate between a mal voice and a female voice.
B
The loudness of sound is related to its frequency.
C
A musical sound has certain well defined frequencies, which are generally harmonics of a fundamental frequency.
D
The timbre of a particular musical sound is related to the waveform of the sound wave.
3
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A particle executes linear simple harmonic motion with amplitude of 2 cm. When the particle is at 1 cm from the mean position, the magnitudes of the velocity and the acceleration are equal. Then, its time period is
A
$${{2\pi } \over {\sqrt 3 }}s$$
B
$${{\sqrt 3 } \over {2\pi }}s$$
C
$${{\sqrt 3 } \over {2\pi }}s$$
D
$${1 \over {2\pi \sqrt 3 }}s$$
4
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
When a ray of light enters a glass slab, then
A
only the frequency change
B
frequency and velocity change
C
frequency does not change
D
frequency and wavelength change
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