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periodic motion

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  • The motion of rotary bee is considered as a periodic motion, but is not considered as an oscillatory motion
    Bec. it repeats its motion but not on both sides of its rest point
  • The distance covered by wave in one second is called……………….
    Wave velocity
  • It is the maximum displacement achieved by the medium particles away from their rest positions.
    Amplitude
  • Wave motion is considered as periodic motion
    As its motion is repeated regularly in equal period of time
  • Time taken by the oscillating body to make one complete oscillation.
    Periodic time
  • It is the motion of an oscillating body when it passes by a fixed point on its path two successive times in the same direction.
    One complete oscillation
  • Astronauts use wireless devices to talk to each other on Moon.
    Bec. sound is a mechanical wave that can not travel through space
  • Sound wave travels in air with velocity 330 m/s and has a wavelength of 0.5 m, its frequency is…………………..
    660 Hz
  • The highest point in the transverse wave.
    Crest
  • As the frequency of the wave increases, its wavelength decreases.
    Bec. they are inversely proportional to each ther
  • Sound waves are mechanical waves
    Bec. it needs a medium to ravel through
  • Sound waves are longitudinal waves.
    As medium particles vibrate perpendicular to the direction of wave propagation
  • Radio waves are electromagnetic waves.
    As it doesn't need medium to travel through
  • Water waves are transverse mechanical waves.
    As medium particles vibrate along the direction of wave propagation
  • We see lightning before hearing thunder.
    Light is faster than sound
  • Waves are classified according to the ability to propagate and transfer energy into………………..and ……………
    Mechanical and electromagnetic
  • We can’t hear the sound of solar explosions, while we can see the light coming out of it
    Bec. sound can not travel through space but light can
  • The area in the longitudinal wave at which the medium particles are faraway from each other.
    Rarefaction
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