Home » Optics » Ray Optics and Optical Instruments » Question

Ray Optics and Optical Instruments

Easy Questions
Moderate Questions
Difficult Questions

Optics

Ray Optics and Optical Instruments
Wave Optics
  1. Focal length  of a convex lens will be maximum for
    1. blue light
    2. yellow light
    3. green light
    4. red light
Correct Option: D

For red light, focal length of lens is maximum ​because f ∝ λ and λ is maximum for red light.


Your comments will be displayed only after manual approval.