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Federal Board > 9th > Physics (Total Videos: 31)
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Chapter 9: Optics (5 videos)

9.1: Laws of refraction
1. Verify laws of refraction of light by using glass slab
9.2: Refractive index of water
1. Find refractive index of water by concave mirror
9.3: Optical properties of glass prism
1. Determine critical angle of glass using prism
2. Trace path of light through prism & measure deviation angle done
9.4: Focal length of lens
1. Find focal length of convex lens by parallax method

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