Physics, asked by shrirampawar249, 2 months ago

a lens having focal length f is cut into two parts and they are placed as shown in the figure what will be the effective focal length of the combination

Answers

Answered by gouthamchowdary2445

Answer:

Explanation:

when the lens is cut into two parts then the radius of lens does not changes

so the focal length will be,

1/f=(u-1)(1/r-1/R)[by lens makers formula]

as the radius doesnot changes the focal length remains same

Answered by dkchakrabarty01

Answer:

Let effective focal length be F,

1/F = 1/f + 1/f =2/f

F =f/2

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