01) Number of Reflections
02) Snell's law
03) Angle of Light Deviation
04) Relative refractive index
05) Absolute refraction
06) Connection between refractive index
07) Relationship between true depth and visual depth
08) Visual displacement
09) Critical angle of light ray
10) Refraction in the prism
11) Lens formula
12) Linear magnification
13) Power of a lens
14) Compact Lenses
15 ) Angular magnification
16 ) Normal adjustment of a simple microscope
17 ) Abnormal adjustment of a simple microscope
18 ) Normal adjustment of an composite microscope
19 ) Abnormal adjustment of an composite microscope
20 ) Normal adjustment of the telescope
21 ) Abnormal adjustment of the telescope