TS EAMCET · Physics · Ray Optics
For a combination of two convex lenses of focal lengths ' \(f_1{ }^{\prime}\) and ' \(f_2\) ' to act as a glass slab, the distance of separation between them is
- A \(f_1+f_2\)
- B \(f_1 \sim f_2\)
- C \(\frac{f_1+f_2}{2}\)
- D \(\frac{f_1 \sim f_2}{2}\)
Answer & Solution
Correct Answer
(A) \(f_1+f_2\)
Step-by-step Solution
Detailed explanation
In case of glass slab \(F=\infty\) If equivalent focal length of convex lenses of focal lengths \(f_1\) and \(f_2\) separated by a distance \(d\) (suppose) is infinity then the combination of lenses will act as a glass slab…
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