Calculate the total refractive power of two lenses placed next to each other! Both of the lenses have a focal length of \( 18 \mathrm{~cm} \) respectively.
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The focal length should be in meters for this formula to work. In this case, both lenses have a focal length of 18 cm, which is 0.18 m. So, the refractive power of each lens is P = 1/0.18 = 5.56 diopters. Since the lenses are placed next to each other, their Show more…
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