Physics · Optics

The effective power of a combination of 5 identical convex lenses which are kept in contact along the principal axis is 25 D. The focal length of each convex lens is:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

125 cm
2500 cm
350 cm
420 cm✓

Correct answer

20 cm

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The effective power of a combination of 5 identical convex lenses which are kept in contact along the principal axis is 25 D. The focal length of each convex lens is:

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The effective power of a combination of 5 identical convex lenses which are kept in contact along the principal axis is 25 D. The focal length of each convex lens is:

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