Focal length of the given lens increases in accordance with lens maker’s formula 1/f =(n-1)(1/R1 -1/R2) because Ngw <nga. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
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When refractive index of liquid is exactly same as the refractive index of glass. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
Focal length of a lens for red light is more than that for blue light. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
A virtual and erect image is formed exactly between optical centre and the principal focus on that very side of the concave lens. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
The phenomenon of total internal reflection of light. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.