Waves

• Frequency (f) is measured in Hertz (Hz). One hertz means one cycle per second.
• Wave speed = frequency x wavelength
• The wavelength is the distance between two consecutive points on a wave that are in phase.
• diffraction 


  -change in direction of wave as it passes an opening or around a barrier in the path.

  -amount of diffraction(sharpness of bending)increases with increasing wavelength (of water) and vice versa
• Water waves have ability to travel around:

  Corners,obstacle,and through openings
• Unit of speed


  ms-1
• if wavelength is smaller than obstacle 


  No noticeable on occurs
• MCQ


  Mcq

  
• Number of frequency that pass through a fixed point

  Frequency
• Radio waves


  Transverse
• For rays to not go out

  Make gap bigger