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Express your answer to three significant figures and include the appropriate units. ANSWER: Correct Problem 25.48 A microscope has a 1.7- -focal-length eyepiece and a 0.75- objective lens. = 704 M × = 2.27 f e cm = 0.242 f o cm = 0.246 d o cm cm cm
Part A Assuming a relaxed normal eye, calculate the position of the object if the distance between the lenses is 15.4 . Express your answer using two significant figures. ANSWER: Correct Part B Calculate the total magnification. Express your answer using two significant figures. ANSWER: Correct Problem 25.56 Part A The nearest neighboring star to the Sun is about 4 light-years away. If a planet happened to be orbiting this star at an orbital radius equal to that of the Earth-Sun distance, what minimum diameter would an Earth-based telescope's aperture have to be in order to obtain an image that resolved this star-planet system? Assume the light emitted by the star and planet has a wavelength of 650 . The Earth-Sun distance is , and . Express your answer to one significant figure and include the appropriate units. ANSWER: Correct Problem 25.53 cm = 0.793 d o cm = 250 M × nm 149.6 × km 10 6 1 ly = 9.461 × m 10 15 = 21.1 D cm
Part A What is the angular resolution limit (degrees) set by diffraction for the 239- mirror diameter telescope ( =560 )? Express your answer using three significant figures. ANSWER: Correct Score Summary: Your score on this assignment is 100%. You received 13 out of a possible total of 13 points. cm λ nm = 1.64 × 10 5 θ

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