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Class VIII >> Science >> Sound >> A1

Q1	Name the motion in which object repeats itself after fixed interval of time.
A	Curvilinear
B	Rectilinear
C	Periodic
D	Circular

Q2	Name the most common periodic motion.
A	Sundial
B	Quartz Clock
C	Simple Pendulum
D	Digital Clock

Q3	What is the nature of sound wave?
A	Longitudinal
B	Transverse
C	Electromagnetic
D	Mechanical

Q4	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

Q5	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

Q6	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

Q7	What the sound of single frequency termed as?
A	Music
B	Note
C	Tone
D	Noise

Q8	Which of the following requires material medium to propagate?
A	Transverse Wave
B	Light Wave
C	Sound Wave
D	All of these

Q9	Which part of the dholak results in producing sound?
A	Stretched Membrane
B	Stretched String
C	Air Column
D	Stretched Band

Q10	Sound can travel through which of the following medium?
A	Gas
B	Solids
C	Liquids
D	All of the Above

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