Exam 23: Mirrors and Lenses

An object is placed at a distance of 41.4 cm from a thin lens along the axis.If a real image forms at a distance of 36.1 cm from the lens,on the opposite side from the object,what is the focal length of the lens?

A real object is place a distance d from a converging lens.The object is then moved to a distance 2d from the converging lens.Which of the following statements is false?

Sally places an object 12.6 cm from a thin convex lens along its axis.The lens has a focal length of 14.8 cm.What are the respective values of the image distance and magnification?

A concave mirror has radius R.When an object is located a distance 2R from the lens,which describes the image formed?

Which of the following best describes the image for a thin convex lens that forms whenever the object is at a distance less than one focal length from the lens?

Which of the following best describes the image of a concave mirror when the object's distance from the mirror is less than the focal point distance?

When the reflection of an object is seen in a plane mirror,the image is

If a virtual image is formed along the principal axis 12 cm from a concave mirror with the focal length 23 cm,what is the object distance from the mirror?

A solid glass sphere with a radius of 4.50 cm and index of refraction of 1.63 has a small coin embedded 2.50 cm from the front surface of the sphere.For the viewer looking at the coin through the glass,at what distance from the front surface of the glass does the coin's image appear to be located?

In an ideal case rays coming from an object toward a lens or mirror should be reasonably close to the optic axis.To the extent that this condition is not completely met,which one of the following effects occurs?

A convex lens has a focal length of magnitude F.At which of the following distances from this lens would a real object give an inverted virtual image?

A concave mirror with focal length 16.0 cm is placed 45.0 cm to the left of the object.A convex lens of focal length 15.0 cm is placed 6.0 cm to the right of the object.Where is the image formed by both the mirror and the lens?

A convex mirror with focal length of -16.2 cm forms an image 11.7 cm behind the surface.Where is the object located as measured from the surface?

Which of the following best describes the image for a thin concave lens that forms whenever the magnitude of the object distance is less than that of the lens' focal length?

An object is placed 27.0 cm to the left of a lens of focal length 17.0 cm.39.0 cm to the right of this lens is a plane mirror.Where does the final image form?

The real image of an object is located 18.8 cm away from a concave mirror,which has a focal length of 8.20 cm.How far is the object from the mirror?

When the reflection of an object is seen in a convex mirror the image will

Two plane mirrors make an angle of 50° with one another.A ray of light parallel to mirror #1 reflects off mirror #2 and then strikes mirror #1.What is the angle of incidence the ray makes with mirror #1?

A glass block,for which n = 1.52,has a blemish located 3.3 cm from one surface.At what distance from that surface does the image of the blemish appear to the outside observer?

A contact lens is made of plastic with an index of refraction 1.50.The lens has an outer radius of curvature of + 1.65 cm and an inner radius of curvature of + 5.85 cm.What is its focal length?