1. Drills on Color Addition and Subtraction

2. If an object absorbs green and is illuminated by white light, what does it appears?
Given: La = Green L = White Required: Lr = ? Solution: Lr = L – La = W – G = RBG – G = Magenta

3. If two lights, blue and red illuminates an object that absorbs red, what is the color of the object?
Given: La = Red L = Red and Blue Required: Lr = ? Solution: Lr = L – La = RB – R = B = Blue

4. Electromagnetic Spectrum

5. Reflection
Is the turning back of light into the same medium after striking a surface

6. Refraction
Is the bending of light when it passes from one medium to another at different speeds

7. Transparent Body
Objects that allow light to pass through it

8. Opaque Body
Objects that does not transmit light at all

9. Dispersion of Light by a Prism
Light at different color travels at different speed
Refraction is inversely proportional to wavelength

10. Diffraction Grating
The bending of light around an obstacle and subsequent spreading of light waves into the region behind the obstacle