# HW Geometric Optics PhysSci Concave mirror You have an optical beam. You have fo

HW Geometric Optics PhysSci Concave mirror You have an optical beam. You have found that the image from an object at do=15 cm is at di=60 cm in front of a concave mirror. What is the focal length f of the mirror? (10 points for just the calculation!) You’ve measured the focal length of a mirror to be f = 15 cm and the distance from the concave mirror to the object is do = 5 cm. What is the distance di from the mirror to the image (15 points) ? To test your result use graph paper and draw the layout to scale. (15 points) Lens You have an optical beam. You have found that the image from an object at do=15 cm made by a lens is at di=60 cm. What is the focal length f of the lens? (10 points for just the calculation!) You’ve measured the focal length of a lens to be f = 10 cm and the distance from the lens to the object do = 20 cm. What is the distance from the lens to the image (15 points) ? To test your result use graph paper and draw the layout to scale. (15 points) If the magnification is measured as m=-di/do=image height/object height, what is the magnification in this case? (10 points)