A microscope with an eyepiece lens of focal length 1.90 cm, Ask an Expert

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Q1. A certain kind of glass has an index of refraction of 1.660 for blue light of wavelength 420 nm and an index of 1.615 for red light of wavelength 680 nm. If a beam containing these two colours is incident at an angle of 30.0° on a piece of this glass, what is the angle between the two beams inside the glass?

Q2. A microscope with an eyepiece lens of focal length 1.90 cm and an objective lens of focal length 1.15 cm is used to examine a section of the brain of a sacrificed rat. The distance between the lenses of the instrument is 24.0 cm and final image is virtual and at infinity. How far from the objective lens is the object? In cm

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