(1)
Waves transmit ________ from one place to another.
(a) energy
(b) mass
(c) both
(d) none
(2)
The waves that require a material medium for their propagation are
called .
(a) Matter waves
(b) Electromagnetic waves
(c) Carrier waves
(d) Mechanical waves
(3)
The distance between any two consecutive crests or troughs is called.
(a) Frequency
(b) Period
(c) Wave length
(d) Phase difference\
(4)
When two identical traveling waves are superimposed, the velocity of
the resultant wave.
(a) Decreases
(b) Increases
(c) Remains unchanged
(d) Becomes zero
(5)
In vibrating cord the points where the amplitude is maximum, are called.
(a) antinodes
(b) nodes
(c) troughs
(d) crests
(6)
The distance between two consecutive nodes is.
(a) λ/2
(b) λ/4
(c) λ
(d) 2 λ
(7)
The distance between consecutive node and antinode is.
(a) λ
(b) λ/2
(c) 2λ
(d) λ/4
(8)
If stretching force is T of wire increases, then its frequency
(a) Deceases
(b) Increases
(c) Remains the same
(d) Any of above
(9)
A stationary wave is set up in the air column of a closed pipe. At the
closes end of the pipe
(a) Always an node is formed
(b) Always an antinode is formed
(c) Neither node nor antinode is
formed
(d) Sometimes a node and
sometimes an antinode is formed
(10)
It is possible to distinguish between transverse and longitudinal waves
form the property of
(a) Refraction
(b) Polarization
(c) Interference
(d) Diffraction
(11)
according to Laplace correction sound travel in air under the
conditions of
(a) adiabatic
(b) isothermal
(c) isobaric
(d) isochoric
(12)
Sound waves do not travel in vacuum because
(a) They are transverse waves
(b) They are stationary waves
(c) They require material medium
for propagation
(d) They do not have enough
energy
(13)
Velocity of sound is vacuum is
(a) 332 ms-1
(b) 320 ms-1
(c) zero
(d) 224 ms-1
(14)
Increase in velocity of sound in the air for 1oC rise in
temperature is
(a) 1.61 ms-1
(b) 61.0 ms-1
(c) 0.61 ms-1
(d) 2.00 ms-1
(15)
The velocity of sound is greatest in
(a) Water
(b) Air
(c) Copper
(d) Ammonia
(16)
On loading the prong of a tuning form with wax, its frequency
(a) Increase
(b) Decrease
(c) Remains unchanged
(d) May increase or decrease
(17)
The velocity of sound in air would become double its velocity at 0oC
at temperature
(a) 313 oC
(b) 586 oC
(c) 819 oC
(d) 1172 oC
(18)
The normal ear is the most sensitive in the frequency range
(a) 20,000 to 30,000 hertz
(b) 10 to 20 hertz
(c) 2000 to 4000 hertz
(d) 6000 to 8000 hertz
(19)
Ultrasonics have
(a) Frequency in the audible
range
(b) Frequency is greater than 20
kHz
(c) Frequency lower than 20 Hz
(d) All of above
(20)
The periodic alternation of sound between maximum and minimum loudness
are called
(a) Silence zone
(b) Interference
(c) Beats
(d) Resonance
(21)
The number of beats produced per second is equal to
(a) The sum of the frequencies
of two tuning forks
(b) The difference of the
frequencies of two tuning forks.
(c) The ratio of the frequencies
of two tuning forks
(d) The frequency of either of
the two tuning forks
(22)
Beats are the results of
(a) Diffraction of sound waves
(b) Constructive and destructive
interference
(c) Polarization
(d) Destructive interference
(23)
Silence zone takes place due to
(a) Constructive interference
(b) Destructive interference
(c) Beats
(d) Resonance
(24)
Doppler effect applies to
(a) Sound wave only
(b) Light wave only
(c) Both sound and light wave
(d) Neither sound nor light wave
(25)
When the source of sound moves away form a stationary listener, then
___________occurs.
(a) an apparent increase in
frequency
(b) an apparent decrease in
frequency
(c) an apparent decrease in
wavelength
(d) an apparent change in
frequency
(26)
A simple pendulum has a bob of mass ‘m’ and its frequency is ‘f’. If we
replaced the bob with a heavier one, say of ‘2m’, then what will be its new
frequency?
(a) 1/4f
(b) 1/2f
(c) f
(d) 2f
(27)
Which one is the correct relation for fundamental frequency of open and
closed pipe?
(a) fopen = 2 f closed
(b) f closed = 2fopen
(c) fopen = f closed
(d) f open = 1 /
f closed
(28)
In open organ pipe
(a) Only even harmonics are
present
(b) Only odd harmonic are
present
(c) Both even and odd harmonics
are present
(d) Selected harmonics are
present
(29)
Which one is the correct relation?
(a) V Newton = V Laplace
(b) V Newton = γV Laplace
(c) V Newton = √γ V Laplace
(d) V Laplace = √γ V Newton
(30)
The dimension of elastic modulus ε is
(a) ML-1T-2
(b) ML-2T-2
(c) MLT-2
(d) ML2T-2
(31) The
wave speed of a wave in terms of its wavelength l and period is:
(a)
v = l T (b)
v = l T2
(c)
v = l / T (d) v = T
/l
(32) In a transverse wave the distance between a crest and a trough
is equal to:
(a) l/2 (b) l/4
(c) l (d) 2 l
(33) In a longitudinal wave the distance between adjacent
condensations is equal to:
(a) l/2 (b)
l/4
(c) l (d) 2 l
(34) When a transverse wave is reflected on
going from a denser to a rarer medium, then at the boundary the reflected wave
undergoes a phase change of:
(a) 0o (b) 90o
(c) -90o (d) 180o
(35) When a wave is reflected on going from a
rarer to a denser medium, then at the boundary the reflected wave will undergo
a phase change of:
(a) 0o (b) 90o
(c) -90o (d) 180o
(36) A
wave has a wavelength of 1 cm and a period of
2 sec. Its wave speed is:
(a) 0.5 m/sec (b)
5 cm/sec
(c)
2.50 cm/sec (d) 0.5 cm/sec
(37) If the distance between a compression and
an adjacent rarefaction is 2 cm and the wave speed of the wave is 4 cm/sec,
then its wavelength is
(a) 2 cm (b) 4 cm
(c) 8 cm (d) ½ cm
(38) The intensity of a wave is the transfer of
a)
energy per unit area normal to direction of
wave propagation
(b) power per unit
area normal to direction of wave propagation
(c) amplitude normal to direction of the wave propagation
(d) power per unit area parallel to direction of wave
propagation
(39) Two wave trains of the same amplitude and
frequency travelling in opposite directions along the same path in the same
medium produce:
(a) resonance (b) beats
(c) standing waves (d)
musical notes
(40) The speed of the transverse waves
travelling in a stretched string of mass m, length l and under tension T is
given by the equation
(a) 
(b) 
(b)
(c) 
(d) 
(d) 
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