Exam 23: Mirrors and Lenses

An object is placed 45.0 cm to the right of a concave mirror with focal length 24.0 cm and -5.0 cm to the left of a lens with focal length -16.0 cm.Where is the image formed by both the mirror and the lens?

Use of a parabolic mirror,instead of one made of a circular arc surface,can be used to reduce the occurrence of which of the following effects?

Atmospheric refraction of light rays is responsible for:

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?

Two thin lenses with 15.0-cm focal lengths at are mounted at opposite ends of a 60.0-cm long tube.An object is located 66.0 cm from one end of the tube.How far from the opposite end is the final image?

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

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?

Five thin lenses,each of focal length f,are placed in contact.What is the resulting focal length of the combination?

How large should a wall-mounted mirror be to view the upper half of one's height,h?

Ansel places an object 23.0 cm from a thin convex lens along the axis.If a real image forms at a distance of 14.0 cm from the lens,what is the focal length of the lens?

When the reflection of an object is seen in a plane mirror,the distance from the mirror to the image depends on:

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?

A real object is place to the left of a converging lens and an image forms.Then,to the right of the converging lens a diverging lens is placed.A real,inverted final image forms to the right of the diverging lens.Which of the following could give this result?

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?

A woman looking in a makeup mirror sees her face at twice its actual size and right-side up.If she is 31.0 cm from the mirror,what is its focal length?

An image is formed using a convex lens,the image being 15 cm past the lens.A second lens is placed 25 cm past the first lens and another image is formed,this time 10 cm past the second lens.Which of the following statements is true?

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?

For a converging lens with two curved surfaces,the radius of curvature for both surfaces is 11 cm.If the focal length is 20 cm,what must the index of refraction be?

An object is 16.0 cm from the surface of a spherical Christmas tree ornament that is 8.00 cm in diameter.What is the magnification of the image?

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