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Syllabus Study Notes

Did you know melophobia is the fear of music.

The only people who find what they are looking for in life are the fault finders– Foster’s Law

Class VIII >> Science >> Sound >> A1

Q1	What happens when a tightly stretched band is plucked?
A	Produces Sound but do not Vibrate
B	Vibrate and Produce Sound
C	Vibrate but do not Produce Sound
D	Only Oscillates To and Fro

Q2	During propagation of sound, air particles __________.
A	Moves Only in Forward Direction
B	Moves Only in upward Direction
C	Moves Only in Backward Direction
D	Vibrates Back and Forth

Q3	The human ear can hear sound having frequency range between __________.
A	Below 20Hz
B	20-20,000Hz
C	Above 20,000Hz
D	None of these

Q4	Name the motion in which object repeats itself after fixed interval of time.
A	Curvilinear
B	Rectilinear
C	Periodic
D	Circular

Q5	Sound can travel through which of the following medium?
A	Gas
B	Solids
C	Liquids
D	All of the Above

Q6	Which of the following requires material medium to propagate?
A	Transverse Wave
B	Light Wave
C	Sound Wave
D	All of these

Q7	Which part of the dholak results in producing sound?
A	Stretched Membrane
B	Stretched String
C	Air Column
D	Stretched Band

Q8	What the sound of single frequency termed as?
A	Music
B	Note
C	Tone
D	Noise

Q9	What is the nature of sound wave?
A	Longitudinal
B	Transverse
C	Electromagnetic
D	Mechanical

Q10	Name the most common periodic motion.
A	Sundial
B	Quartz Clock
C	Simple Pendulum
D	Digital Clock

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