(Wavelength (Rest position=No wave., Amplitude=Height or depth of the…
Longer wavelength/ Lower frequency/ Lower energy
(Radio waves/ Microwaves/ Infrared waves)
Shorter wavelength/ Higher frequency/ Higher energy (Ultraviolet rays/ X-rays/ Gamma rays)
Visible light (red, orange, yellow, green, blue, violet)
Rest position=No wave.
Amplitude=Height or depth of the wave from rest to the crest, or from rest to the trough of the wave.
Trough=Lowest point in the wave.
Frequency=The rate of repetition of the wave.
Crest=Highest point in the wave.
Wavelength=Distance from the same place in consecutive waves.
Sources of Light
Umbra and Penumbra
Types of Mirrors
Plane (Flat) Mirror
Convex Mirror (Outward-curved)
Concave Mirror (Inward-curved)
Laws of Reflection
The incident ray, normal and reflected ray all lie on the same plane.
Angle of incidence=Angle of reflection
In front of mirror
Smaller than object
Larger than object
Real (in front of mirror)
Virtual (behind mirror)
Drawing Images in a Plane Mirror
Drawing Ray Diagrams
Refraction of light
Index of refraction formula
Thin Lens Equation