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Science — Third Preparatory
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Unit 1 - Force, Motion, Acceleration and Physical Quantities
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Lesson 2 - Light Energy, Spherical Mirrors, Lenses and Vision Defects Correction
Lesson 1
Lesson 2 - Light Energy, Spherical Mirrors, Lenses and Vision Defects Correction
Lesson parts
1.1 Lesson 2 - Light Energy, Spherical Mirrors, Lenses and Vision Defects Correction
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1.2 Lesson summary
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