1-The distance between the eyepiece and the objective lens in a certain compound microscope is 19 cm. The focal length of the eyepiece is 2.1 cmand that of the objective is 0.42 cm. What is the overall magnification of the microscope (algebraic value)? (Give your answer in decimal with no digits after the decimal point and without unit)

1-The distance between the eyepiece and the objective lens in a certain compound microscope is 19 cm. The focal length of the eyepiece is 2.1 cmand that of the objective is 0.42 cm. What is the overall magnification of the microscope (algebraic value)? (Give your answer in decimal with no digits after the decimal point and without unit)

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HW Q7
Physics Optics: For an infinity optical system, explain why the magnification is determined by the ratio of the focal tube length over the focal objective length. Include a diagram showing the focal tube length and the focal objective.
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