Punjab Board > Class 8 > General Science (Total Videos: 145)

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Chapter 10: Lenses (12 videos)   (Practice Test)
10.1: Lenses
  1. Lens Terminologies
10.2: Types of Lenses  (Practice Test)
  1. Types of Lenses
  2. Lens Terminologies
10.3: Image Formation by Lenses  (Practice Test)
  1. Convergence and Divergence of Lenses
  2. Image Formed by Convex Lens
  3. Image Formation by Concave Lens
10.4: Image Formation in Camera and Human Eye  (Practice Test)
  1. Introducing Camera
  2. Human Eye
10.5: How Eyes Get Used to Darkness After Sometimes
  1. Adjustment of Eyes to Darkness
10.6: Defects of Human Eye
  1. Shortsightedness
  2. Farsightedness
10.7: Uses of Lenses  (Practice Test)
  1. Uses of Lenses