Exam 23: Mirrors and Lenses

An object is placed at the origin. A converging lens of focal length 10 mm is placed at x = 40 mm on the x axis. A second converging lens of focal length 20 mm is placed at x = 90 mm. Graphically determine the size and location of the final image.

A "parallel ray" is a ray parallel to the

In air a concave mirror has a focal length of 30. cm. Under water that same mirror would have ________ focal length.

In using ray tracing to graphically locate the image of an object that is placed in front of a mirror, describe three simple rays that you could draw that pass by the head of the object.

At which, if any, of the points indicated in Figure 23-3 should you place your eye if you wish to see an image of the arrow in the mirror?

Spherical aberration can occur in

A 4.0 cm high object is 20. cm in front of a 1.333 Diopter plano-convex lens. (a) Find the image position. Real or Virtual? (b) Find the image size. Erect or Inverted?

Is it possible to see a virtual image?

An object is placed a distance d in front of a plane mirror. The size of the image will be

The IMAGE of a plane mirror (of a real object) has the following characteristics:

The magnification M = -di/do is the ratio of image to object

Spherical lenses suffer from

If you place a plane mirror vertically into water, and a dolphin moves toward it with a speed of 4 m/s, she will see her image move toward her at a relative speed of

At an amusement park you stand between two plane mirrors, which intersect at an angle of 60°. You are positioned at point P in Figure 23-5. You are 1.0 m from the nearest mirror, and 15° above it. What is the distance from you to the nearest image and to the second nearest image?

You may have seen ambulances on the street with the letters of the word AMBULANCE written on the front of them, in such a way as to appear correctly when viewed in your car's rear-view mirror. See Figure 23-1. How do the letters appear when you look directly at the ambulance?

A camera uses a biconvex lens made of glass with an index of refraction of 1.60 and has a radius of curvature of 12. cm for the 1st surface and 24. cm for the 2nd. (a) What is the focal length of this lens when used in air? (b) If used under water (n = 1.33), what is the focal length?

A converging lens with the same curvature on both sides and focal length 25. cm is to be made from crown glass (n = 1.52). What radius of curvature is required for each face?

The radius of curvature for a plane (flat) mirror is

A person approaches a plane mirror at a speed of 2 m/s. How fast does he approach his image?

If you stand in front of a convex mirror, at the same distance from it as its radius of curvature,