Lenses
Learning Time: 4-12 hours
Content: Lenses are optical instruments that form images by refracting light. This topic covers lens types (concave, convex), focal length, the lens equation (1/f = 1/u + 1/v), and real-virtual image formation. TYT focuses on basic lens properties, while AYT focuses on optical instruments (microscope, telescope). The current 2025 curriculum also covers laser technology and eye health applications. Learning this topic forms the basis for the analysis of optical devices.
- Lens Types:
- Convex Lenses (Converging)
- Concave Lenses (Diverging)
- Hybrid Lenses
- Optical Properties of Lenses:
- Focal Length (f)
- Lens Equation (1/f = 1/u + 1/v)
- Magnification (M = v/u)
- Image Formation:
- Real Image (Inverted and Reduced)
- Virtual Image (Erect and Enlarged)
- Tracing of Light Rays
- Applications:
- Eyeglasses and Contact Lenses
- Microscope and Telescope
- Laser and Optical Instruments
- Affecting Factors:
- Lens Material
- Refractive Index
- Ambient Conditions
- Modern Developments:
- Eye Health Technologies
- Laser Surgery
- Digital Imaging
Course Features
- Lectures 0
- Quizzes 0
- Duration 5 hours
- Skill level Intermediate
- Language English
- Students 15
- Assessments Yes
