The focal length of the given convex lens is 20 cm. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
Discussion Forum Latest Questions
Let focal length of converging lens f₁ = + f and focal length of diverging lens f₂ = -f. If focal length of combination be feq, then 1/feq = 1/f1 + 1/f2 = 1/(+f) + 1/(-f) = 0 feq = ...
The lens will now behave as a converging lens because its new refractive index w.r.t. water is less than one. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
The lens will disappear and there will be no converging or diverging action of the lens. Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.
The power of given convex lens increases on account of the fact that fv < fr Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Session 2024-2025.