140 Hz
122.4 Hz
110 Hz
250 Hz
120 c/s
100 c/s
190 c/s
234 c/s
50
70
110
40
` sqrt ( ( 40/12)) s `
`sqrt ( (8/40 ) ) s`
`sqrt ( (12)/(40) )s`
`sqrt ( ( 40)/( 8) ) `
4:5
3:4
5:4
1:1
3600 s
3456 s
1728 s
864 s
102
107
98
94
0.25 m
0.5 m
1 m
2 m
3
4
2
1
22 m/s
11 m/s
33 m/s
44 m/s
167Å
zero
16.7 Å
1.67 Å
`12 xx 10^6 m/s`
`8 xx 10^5 m/s`
`1.2 xx 10^6 m/s`
`7.5 xx 10^6 m/s`
8.5 m/s
40 m/s
50 m/s
16.5 m/s
Both I and II are correct
I, Ill and IV are correct
Both II and IV are correct
I, II, Ill and IV are correct
2:1
1:2
`1 : sqrt 2`
`sqrt 2 : 1`
t11eir lengths are equal and the suspencJed particles have the same mass
their lengths me equal but the suspended pmticles need not have ths same rna!;s
their lengths me different but the suspended p;; rticles have the same mass
the masses o· the suspended particle must Je in the inverse ratio , of the lengths of the pendulums
at x =0
at x =A
at x= A/2
when x is greater than `A/2` but less than A
2:4
2:1
3:1
1:1
kinetic energy only
potential enrergy only
Both kinetic and potential energies
minimum acceleration
kinetic energy only
potential enrergy only
Both kinetic and potential energies
minimum acceleration
kinetic energy only
potential enrergy only
Both kinetic and potential energies
minimum acceleration
kinetic energy only
potential enrergy only
Both kinetic and potential energies
minimum acceleration
`v/(v+ v_s ) - n`
`v/(v+ v_s ) n`
`v/(v-v_s) n`
` ( (v+v_s)/v ) n `
`v/(v+ v_s ) - n`
`v/(v+ v_s ) n`
`v/(v-v_s) n`
` ( (v+v_s)/v ) n `
stationary waves
transverse waves
longitudinal waves
a combination of transverse and stationary wave
frequency and amplitude
frequency alone
amplitude alone
the difference in frequencies from two sources
the source should execute longitudinal vibrations
the source should execute transverse vibrations
the source may execute any type of vibration
the vibrations of source are not necessary
longitudinal waves only
longitudinal waves only
longitudinal as well as transverse waves
stationary waves only
increasing the length of the rod
increasing the weight of the bob
reducing tile length of the rod
reducing the weight of the bob
Constant period
Constant acceleration
Displacement and acceleration are proportional
Displacement and torque are proportional
20dB
60 dB
100 dB
160 dB
amplitude of the motion
square of the amplitude of the motion
cube of the amplitude of the motion
square of the acceleration of the body
amplitude of the motion
square of the amplitude of the motion
cube of the amplitude of the motion
square of the acceleration of the body
Phase of the oscillating particles same at `t = 1 s` and `t = 3 s`
Phase of the oscillating particle is same at `t = 2 s` and `t = 8 s`
Phase of the oscillating particle is same at `t = 3 s` and `t = 7 s`
Phase of the oscillating particle is same at `t = 4 s` and `t = 10 s`
T will increase slightly
T will remain the same
T will decrease slightly
T will become more than 2 times
`f= pi omega`
`omega=2 pi f`
`f= 2 omega //pi`
`f= 2 pi omega`
supersonic
subsonic
300 m/s
about 10 m/s
`T prop sqrt l`
`T prop l^2`
`T prop l`
`T` does not depend on ` l`
1 and 2
2 and 3
1 and 3
1, 2 and 3
1 and 2
2 and 3
Only 3
Only 2
Less than 4 s
More than 4 s
Equal to 4 s
Infinity
`1 < 4 < 2 < 3`
`4 < 1 < 2 < 3`
`1 < 4 < 3 < 2`
`4 < 1 < 3 < 2`
`4 s`
`5 s`
`6 s`
`8 s`
3600 s
3456 s
1728 s
864 s
Tile length of the pendulum has to be reduced
The length of the pendulum has to be increased
The mass of the pendulum has to be increased
The mass of the pendulum has to be reduced
1
5
7
12
Longitudinal, 50 m/s
Transverse, 50 m/s
Longitudinal, 100 m/s
Transverse, 100 m/s
Fundamental
First overtone
Second overtone
Third overtone
Constant period
Constant acceleration
Displacement and acceleration are proportional
Displacement and torque are proportional
`20` Hz to `200` Hz
`2` Hz to `20` Hz
`200` Hz to `2000` Hz
`20` Hz to `20000` Hz
`0.27 s`
`0.35 s`
`0.49 s`
`0.64 s`
`0^o`
`90^o`
`180^o`
`270^o`
`F_x(x)=-kx^2`
`F_x(x)=-kx`
`U(x)=1/2 kx`
`U(x)=1/2 k^2 x`
Only 1
Only 2
1 and 3
2 and 3
reduced
increased
reduced and the mass of the bob increased
reduced and also the mass of the bob reduced
pressure of the medium is decreased
temperature of the medium is increased
humidity of the medium is increased
Both '2' and '3'
`166 m//s`
`66.4 m//s`
`332 m//s`
`664 m//s`
In progressive waves, the amplitude may be constant and neighbouring points are out of phase vtith each other
In air or other gases, a progressive antinode occurs at a displacement node and a progressive node occurs at a displacement antinode
Transverse wave can be polarised while longitudinal wave can not be polarised
Longitudinal wave can be polarised while transverse wave can not be polarised
between 20 Hz and 1000 Hz
between 1000 Hz and 20000 Hz
more than 20 kHz
less than 20 Hz
time periods
amplitude
spring constants
kinetic energy
Polarisation
Diffraction
Reflection
Refraction
straight line passing through origin
parabolic
circle
None of the above
doctors
engineers
astronauts
navigators
simpie harmonic
periodic but not simple harmonic
non-periodic
None of the above
decreased by 4-fold
increased by 4-fold
decreased to half of the initial value
increased by a factor of 2 of its initial value
infra-red lights
ultraviolet lights
chemicals from their body
ultrasonic sounds
because they reflect the sound to the audience
because they can absorb noise
to have better aeration in the hall
as any sound from outside cannot pass through a curved ceiling