Answer:
Pitch:it refers to the highest and lowness of a sound.
Wavelength: It is the distance measured from one crest to another, or from one trough to another.
Refraction of Light: The light bends as it travels from one medium to another.
Reflection of Light: It happens when light bounces back after hitting a well-polished surface.
Crest: The highest point of the wave from the center.
<u>I hope this helps! :)</u>
Answer:
Hii hello how are you....
It's called "Ionic compound"
