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A concave mirror of focal lenght F1 is placed at a distance of d(m) from a convex lens of focal lenght F2. a beam of light coming from infinity and falling on this convex lens,concave mirror combination returns to infinity. the distance d is equal to

A concave mirror of focal lenght F1 is placed at a distance of  d(m) from a convex lens of focal lenght F2. a beam of light coming from infinity and falling on this convex lens,concave mirror combination returns to infinity. the distance  d is equal to
 

Grade:10

1 Answers

Arun
25757 Points
5 years ago

Dear student

If you draw its figure, you will get-

∴ d = 2f1+f2

 

Regards and Thanks

Arun (askIITians forum expert)

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