Determine the angular magnification of the planet
The Yerkes refracting telescope consists of a 1 m diameter objective lens of focal length 20 m. suppose it is employed with an eyepiece of focal length 4.31 cm.
Determine the angular magnification of the planet Mars as seen via the telescope.
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The Yerkes refracting telescope consists of a 1 m diameter objective lens of focal length 20 m. suppose it is employed with an eyepiece of focal length 4.31 cm. Determine the angular magnification of the planet Mars as seen via the telescope.
The near point of the eye is 151 cm. A corrective lens is to be employed to allow this eye to evidently focus on objects 25 cm in front of it. Part A) What must be the focal length of the lens?
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A convex lens having a 5 cm radius is employed to focus sunlight on a piece of paper to a spot 1 mm in diameter. If it takes 5 seconds for the paper to begin burning, determine how much energy does the paper require to ignite?
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