Week 13 SGM 1) A ray of light is incident on the surface of a flat mirror as shown in the pictures below. For each, identify the angles of incidence and reflection and draw the reflected ray. Mirror a. b. C. Mirror Oincident a Oincident b= O incident c= Oreflect a = Oreflect b = Oreflect= Mirror Mirror d. O incident d= Oreflect d =

An object 10.0 cm tall is placed at the zero mark of a meter-stick. A spherical mirror located at some point on the meter-stick creates an image of the object that is upright, 4.00 cm tall, and located at the 42.0-cm mark of the meterstick. (a) Is the mirror convex or concave? (b) Where is the mirror? (c) What is the mirror s focal length?

Astronomers often take photographs with the objective lens or mirror of a telescope alone, without an eyepiece. (a) Show that the image size h for such a telescope is given by h = fh/(f p), where f is the objective focal length, h is the object size, and p is the object distance. (b) What If? Simplify the expression in part (a) for the case in which the object distance is much greater than objective focal length. (c) The wingspan of the International Space Station is 108.6 m, the overall width of its solar panel configuration. When the station is orbiting at an altitude of 407 km, find the width of the image formed by a telescope objective of focal length 4.00 m.

. A person looks at a statue that is 2 m tall. The image on the persons retina is inverted and 0.005 m high. What is the magnification?

An underwater scuba diver sees the Sun at an apparent angle of 45.0 above the horizontal. What is the actual elevation angle of the Sun above the horizontal?

(a) Does your bathroom mirror show you older or younger than your actual age? (b) Compute an order of magnitude estimate for the age difference, based on data you specify?

A lens is used to examine an object across a room. Is the lens probably being used as a simple magnifier? Explain in terms of focal length, the image, and magnification.

What is the focal length of a pane of window glass? (a) zero (b) infinity (c) the thickness of the glass (d) impossible to determine

An object is placed in front of a converging lens at an object distance of twice the focal length of the lens. Sketch a ray diagram and compare the image and object distances. Repeat with two more ray diagrams, using different focal lengths and still making the object distance twice the focal length. Can you draw any conclusions by comparing the object distance and the image distance?

A person spear fishing from a boat sees a stationary fish a few meters away in a direction about 30 below the horizontal. To spear the fish, and assuming the spear does not change direction when it enters the water, should the person (a) aim above where he sees the fish. (b) aim below the fish, or (c) aim precisely at the fish?