SATHEE: Ray Optics And Optical Instruments Ques 47

Ray Optics And Optical Instruments Ques 47

47. Focal length of a convex lens will be maximum for

[1994]

(a) blue light

(b) yellow light

(c) green light

(d) red light

Show Answer

Answer:

Correct Answer: 47.(d)

Solution:

(d) For red light, focal length of lens is maximum because $f \propto \lambda$ and $\lambda$ is maximum for red light.

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Ray Optics And Optical Instruments

Ray Optics And Optical Instruments Ques 47

47. Focal length of a convex lens will be maximum for

Answer:

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