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Simple Harmonic Motion and Waves
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Speed (v) of wave is equal to product of frequency and
time period
Vibration
Amplitude
Wavelength
A transverse wave produced on a spring has a frequency of 200 Hz and travels along length of a spring of 80 m in 0.5seconds.
speed of wave will be
133 ms-1
122 ms-1
140 ms-1
150 ms-1
Christian Huygens invented pendulum clock in
1656
1657
1682
1670
Water waves are
Mechanical
electromagnetic
chemical
longitudinal
Oscillations of a system in presence of some resistive force are
linear oscillations
random oscillations
simple harmonic oscillations
damped oscillations
Expression for Hooke's law is
F = ma
F = vl
F = m1m2
F = -kx
A simple pendulum completes one vibration in 3seconds.
When g = 10 ms-2, its length will be
2.28 m
1.5 M
3.2 m
2 m
If length of simple pendulum is doubled then its time period will be
4π√(l⁄g)
2.8π√(l⁄g)
2π√g
tripled
Motion of ceiling fan
quadratic
is SHM
isn't SHM
Linear
At one end of a ripple tank 90 cm across, a 6Hz vibrator produces wave whose wavelength is 30 mm. time needed to cross waves is
10 seconds
3 seconds
5 seconds
7 seconds
If 100 waves pass through a medium in 20seconds and their wavelength is 6cm then velocity is
2.5ms-1
0.5ms-1
0.3ms-1
1ms-1
Time period of simple pendulum 1 m long at a location where g=10ms-1 will be
3 s
1.5 s
2.5 s
1.99 s
If spring is stiff, then value of k is
Small
approx. zero
Large
Moderate
Motion of a ball placed in a bowl is
simple harmonic motion
damped motion
None of the above
compressional motion
Velocity of simple harmonic motion at mean position is always
Minimum
Zero
maximum
Negative
Time period T of simple harmonic motion of a mass m attached to a spring is given by
T = 2π √(m/k)
T = π √(k/m)
T = 2π √(m+k)
T = 2π √(k/m)
If 160 waves pass through a point of a medium in 40seconds.
Its frequency is
4 Hz
2 Hz
5 Hz
3 Hz
If mass of bob is increased 3 times then it's time period
increases 4 times
Remains same
decreases 2 times
Increases
Speed of a wave in water depends on the
Temperature
depth of water
depth of tank
None of the above
Characteristic of wave independent of others is
Wavelength
Amplitude
Speed
Frequency
1
2
3
5
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Related Topics
Simple Harmonic Motion and Waves
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