Wave Motion MCQ

Test your knowledge with important Wave Motion MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Wave Motion MCQs at Bissoy

• Two simple pendulum, whose lengths are 100cm and 121cm, are suspended side by side. Their bobs are pulled together and then released. After how many minimum oscillations of the longer pendulum, will the two be in phase again?
  ক

  11

  খ

  10

  গ

  21

  ঘ

  20
• A simple pendulum is vibrating in an evacuated chamber. It will oscillate with ___________
  ক

  Constant amplitude

  খ

  Increasing amplitude

  গ

  Decreasing amplitude

  ঘ

  First increasing amplitude and then decreasing amplitude
• A hollow spherical pendulum is filled with mercury has time period T. If mercury is thrown out completely, then the new time period ___________
  ক

  Increases

  খ

  Decreases

  গ

  Remains the same

  ঘ

  First increases and then decreases
• A simple pendulum is executing simple harmonic motion with a time period T. If the length of the pendulum is increased by 21%, the increase in the time period of the pendulum of increased length is?
  ক

  10%

  খ

  30%

  গ

  21%

  ঘ

  50%
• The time period of a simple pendulum is 2 sec. If its length is increased by 4 times, then its period becomes ___________
  ক

  16 sec

  খ

  8 sec

  গ

  12 sec

  ঘ

  4 sec
• Time period of a simple pendulum will be double if we ___________
  ক

  Decrease the length 2 times

  খ

  Decrease the length 4 times

  গ

  Increase the length 2 times

  ঘ

  Increase the length 4 times
• To show that a simple pendulum executes simple harmonic motion, it is necessary to assure that ___________
  ক

  Length of the pendulum is small

  খ

  Amplitude of oscillation is small

  গ

  Mass of the pendulum is small

  ঘ

  Acceleration due to gravity is small
• A particle executes simple harmonic motion of amplitude A. At what distance from the mean position is its kinetic energy equal to its potential energy?
  ক

  0.51A

  খ

  0.71A

  গ

  0.61A

  ঘ

  0.81A
• A particle having potential energy 1/3 of the maximum value at a distance of 4 cm from mean position. Amplitude of motion is ___________
  ক

  4√3

  খ

  6/√2

  গ

  2/√6

  ঘ

  2√6
• A particle executing simple harmonic motion has amplitude 0.01 and frequency 60Hz. The maximum acceleration of the particle is ___________
  ক

  144 π2 m/s2

  খ

  80 π2 m/s2

  গ

  120 π2 m/s2

  ঘ

  60 π2 m/s2
• The maximum velocity and maximum acceleration of a body moving in a simple harmonic motion are 2m/s and 4m/s2 respectively. What will be the angular velocity?
  ক

  4 rad/sec

  খ

  3 rad/sec

  গ

  2 rad/sec

  ঘ

  8 rad/sec
• The magnitude of acceleration of particle executing simple harmonic motion at the position of maximum displacement is?
  ক

  Zero

  খ

  Minimum

  গ

  Maximum

  ঘ

  Infinity
• A particle is executing simple harmonic motion of amplitude 10cm. Its time period of oscillation is π seconds. The velocity of the particle when it is 2 cm from extreme position is ___________
  ক

  10 cm/s

  খ

  12 cm/s

  গ

  16√16 cm/s

  ঘ

  16 cm/s
• A body is executing the simple harmonic motion with an angular frequency of 2rad/sec. Velocity of the body at 20m displacement, when amplitude of motion is 60m, is ___________
  ক

  90 m/s

  খ

  118 m/s

  গ

  113 m/s

  ঘ

  131 m/s
• A particle executes simple harmonic motion, its time period is 16s. If it passes through the centre of oscillation, then its velocity is 2 m/s at time 2s. The amplitude will be ___________
  ক

  7.2m

  খ

  4cm

  গ

  6cm

  ঘ

  0.72m
• A particle in simple harmonic motion is described by the displacement function x(t)=Acos⁡(ωt+θ). If the initial (t=0) position of the particle is 1cm and its initial velocity isπcm/s, what is its amplitude? The angular frequency is the particle is πrad/s.
  ক

  1 cm

  খ

  √2 cm

  গ

  2 cm

  ঘ

  2.5 cm
• The composition of two simple harmonic motions of equal periods at the right angle to each other and with a phase difference of π results in the displacement of the particle along?
  ক

  Circle

  খ

  Figure of eight

  গ

  Straight line

  ঘ

  Ellipse
• Two simple pendulums of lengths 5m and 20m respectively are given small linear displacement in one direction at the same time. They will again be in the phase when the pendulum of shorter length has completed.
  ক

  2 oscillations

  খ

  1 oscillation

  গ

  5 oscillations

  ঘ

  3 oscillations
• A particle with restoring force proportional to displacement and resisting force proportional to velocity is subjected to a force Fsinωt. If the amplitude of the particle is maximum for ω=ω1 and the energy of the particle maximum for ω=ω2, then?
  ক

  ω1≠ω0 and ω2=ω0

  খ

  ω1=ω0 and ω2=ω0

  গ

  ω1≠ω0 and ω2≠ω0

  ঘ

  ω1≠ω0 and ω2≠ω0
• In case of a forced vibration, the resonance peak becomes very sharp when the ___________
  ক

  Damping force is small

  খ

  Restoring force is small

  গ

  Applied periodic force is small

  ঘ

  Quality factor is small
• A simple pendulum is suspended from the roof of a trolley which moves in a horizontal direction with an acceleration a, then the time period is given by T=2π√(l/g), where g is equal to ___________
  ক

  g

  খ

  g-a

  গ

  g+a

  ঘ

  √(g2+a2 )
• A second’s pendulum is mounted in a rocket. Its period of oscillation will decrease when rocket is ___________
  ক

  Moving down with uniform acceleration

  খ

  Moving around the earth in geostationary orbit

  গ

  Moving up with uniform velocity

  ঘ

  Moving up with uniform acceleration
• If the length of a simple pendulum is increased by 2%, then the time period ___________
  ক

  Increases by 1%

  খ

  Decreases by 1%

  গ

  Increases by 2%

  ঘ

  Decreases by 2%
• Time period of a simple pendulum is 2sec. If its length is increased by 4 times, then its period becomes ___________
  ক

  8 sec

  খ

  12 sec

  গ

  16 sec

  ঘ

  4 sec
• The time period of mass suspended from a spring is T. If the spring is cut into four equal parts and the same mass is suspended from one of the parts, then the new time period will be ___________
  ক

  T/4

  খ

  T

  গ

  T/2

  ঘ

  2T
• A body of mass 5kg hangs from a spring and oscillates with a time period of 2π seconds. If the body is removed, the length of the spring will decrease by?
  ক

  g/k meters

  খ

  k/g meters

  গ

  2π meters

  ঘ

  g meters