Harmonic Motion MCQ

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

• If the metal bob of a simple pendulum is replaced by a wooden bob, then its time period will ___________
  ক

  Increase

  খ

  Decrease

  গ

  Remains the same

  ঘ

  First increases and then decreases
• Statement: In simple harmonic motion, the motion is to and fro and periodic. Reason: Velocity of the particle, v=ω√(a2-x2) Where x is displacement.
  ক

  Both statement and reason are true and the reason is the correct explanation of the statement

  খ

  Both statement and reason are true but the reason is not the correct explanation of the statement

  গ

  Statement is true, but the reason is false

  ঘ

  Statement and reason are false
• In case of a forced vibration, the resonance wave becomes very sharp when the ___________
  ক

  Applied periodic force is small

  খ

  Quality factor is small

  গ

  Damping force is small

  ঘ

  Restoring force is small
• The mass and the radius of a planet are twice that of earth. Then, period of oscillation of a second pendulum on that planet will be ___________
  ক

  1/√2s

  খ

  2√2s

  গ

  2s

  ঘ

  1/2s
• When the maximum kinetic energy of a simple pendulum is K, then what its displacement (in terms of amplitude
  ক

  when its kinetic energy is K/2? ] a/√2

  খ

  a/2

  গ

  a/√3

  ঘ

  a/3
• What is the maximum acceleration of the particle executing the simple harmonic motion, y = 2sin, where y is in cm?
  ক

  , where y is in cm? ] π/2 cm/s2

  খ

  (πt/2)+φ

  গ

  (πt/2)+φ

  ঘ

  (πt/2)+φ
• In a simple harmonic oscillator, at the mean position ___________
  ক

  Kinetic energy in minimum, potential energy is maximum

  খ

  Both kinetic and potential energies are maximum

  গ

  Kinetic energy is maximum, potential energy is minimum

  ঘ

  Both kinetic and potential energies are minimum
• A spring of force constant k is cut into two pieces, such that one piece is double the length of the other. Then the long piece will have a force constant of ___________
  ক

  (2/3) k

  খ

  (3/2) k

  গ

  3k

  ঘ

  6k
• A pendulum watch can be used in an artificial satellite.
  ক

  True

  খ

  False
• Every simple harmonic motion is periodic motion, but every periodic motion need not be simple harmonic motion.
  ক

  True

  খ

  False
• A spring 40mm long is stretched by the acceleration of a force. If 10N force is required to stretch the spring through 1mm, then work done in stretching through 40mm is?
  ক

  84J

  খ

  48J

  গ

  24J

  ঘ

  8J
• Statement: The time period of a pendulum on a satellite orbiting the earth is infinity. Reason: The time period of a pendulum is inversely proportional to square to root of g.
  ক

  Both statement and reason are true and the reason is the correct explanation of the statement

  খ

  Both statement and reason are true but the reason is not the correct explanation of the statement

  গ

  Statement is true, but the reason is false

  ঘ

  Statement and reason are false
• If the length of simple pendulum is tripled, what will be its new time period in terms of original period T?
  ক

  0.7T

  খ

  1.73T

  গ

  T/2

  ঘ

  T
• If a particle is oscillating on the same horizontal plane in the ground ___________
  ক

  It has only kinetic energy but no potential energy

  খ

  It has only potential energy but no kinetic energy

  গ

  It has both kinetic and potential energies

  ঘ

  It has neither kinetic nor potential energies
• A child swinging on a swing stands up. Then the time period of the swing will ___________
  ক

  Increase

  খ

  Decrease

  গ

  Remain the same

  ঘ

  Increase, if the child is long and decreases if the child is short
• A coin is placed on a horizontal platform, which undergoes vertical simple harmonic motion of angular frequency ω. The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time.
  ক

  For an amplitude of g2/ω2

  খ

  For an amplitude of g/ω2

  গ

  At the highest position of the platform

  ঘ

  At the mean position of the platform
• A simple pendulum has a time period T1, when on the earth’s surface; and T2, when taken to a height R above the earth’s surface (R is the radius of the earth). The value of T2/T1 is?
  ক

  1

  খ

  √2

  গ

  4

  ঘ

  1
• A particle free to move along the x-axis has potential energy given by U(x) = k for -∞≤x≤+∞, where k is a positive constant of appropriate dimensions. Then?
  ক

  for -∞≤x≤+∞, where k is a positive constant of appropriate dimensions. Then? ] The particle is in unstable equilibrium at points away from the origin

  খ

  1-exp -x2

  গ

  1-exp -x2

  ঘ

  1-exp -x2
• A particle executes simple harmonic motion between x = -A and x = +A. The time taken for it to go from 0 to A/2 is T1 and to go from A/2 to A is T2. Then?
  ক

  T1 2

  খ

  T1 > T2

  গ

  T1=T2

  ঘ

  T1=2T2
• A motion can be oscillatory but not simple harmonic.
  ক

  True

  খ

  False