You wish to project the image of a slide on a screen 9.00 m from the lens of a slide projector. (a) If the slide is placed 15.0 cm from the lens, what focal length lens is required? (b) If the dimensions of the picture on a 35 mm color slide are 24 mm * 36 mm, what is the minimum size of the projector screen required to accommodate the image?
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You wish to project the image of a slide on a screen 9.00 m
from the lens of a slide projector. (a) If the slide is placed 15.0 cm from
the lens, what focal length lens is required? (b) If the dimensions of the
picture on a 35 mm color slide are 24 mm * 36 mm, what is the minimum
size of the projector screen required to accommodate the image?
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- A slide projector needs to create a 88-cmcm-high image of a 2.0-cmcm-tall slide. The screen is 340 cmcm from the slide. What focal length does the lens need? Assume that it is a thin lens. Express your answer with the appropriate units. Enter positive value if the lens is converging and negative value if the lens is diverging. How far should you place the lens from the slide? Express your answer with the appropriate units.Is this question set up wrong? I think the statement "The magnification of a book held 7.50 cm from a 10.0 cm-focal length lens is 3.00." is impossible using the lens equation 1/do + 1/di = 1/f and the equation for magnification m = -di / do.Problem 7: A camera with a 96.6-mm focal length lens is being used to photograph the Sun. What is the image height of the Sun on the film, in millimeters, given the sun is 1.40 × 106 km in diameter and is 1.50 × 108 km away?
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- A slide projector is used to project a 35 mm wide slide to fill a 1.4 m widescreen. If the projector uses a converging lens with a 10 cm focal length, then relative to the lens where must the slide and screen be placed?An amateur astronomer decides to build a telescope from two lenses. One of the lenses has a focal length of 10.0 cm, and the other has a focal length of 1.4 cm. (a) Which lens should be the objective, for maximum magnification? (b) What will be the magnification of the telescope? (c) How long will the telescope tube be if the telescope is focused on a flower that is 1.00 meter away? (Keep four significant figures for this.)The image distance for the lens of a person's eye is2.10 cm.Calculate the focal length of the eye's lens system for anobject (a) at infinity, (b) 500 cm from the eye, and (c) 25 cm from the eye.