Exam 18: Ray Optics

Light enters a substance from air at 30.0° to the normal. It continues within the substance at 23.0° to the normal. What is the critical angle for this substance when it is surrounded by air?

Reza's face is 20 cm in front of a concave shaving mirror having a focal length of magnitude 30 cm. How large is the image of his face?

A plastic cube is immersed in water having an index of refraction of 1.33. A laser beam in the plastic strikes the interface at an angle of 14.5° with the normal in the plastic. In the water, this beam makes an angle of 21.8° with the normal. What is the speed of light in the plastic cube? (c = 3.0 × 10⁸ m/s)

The index of refraction for a certain material is 1.399 for red light and 1.432 for blue light. Light containing both of these colors is traveling in vacuum and strikes a flat sheet of this material. Find the angle separating the two colors in the refracted light in the sheet if the angle of incidence is 60.00°.

An object is placed 10 cm from a convex lens with a focal length of magnitude 20 cm. What is the magnification?

An object is placed 60 cm from a convex lens with a focal length of magnitude 10 cm. What is the magnification?

The image formed by a single concave lens

The focal length of a concave mirror has a magnitude of 20 cm. What is its radius of curvature?

A ray of light traveling in air makes a 63.0° angle with respect to the normal of the surface of a liquid. It travels in the liquid at a 39.2° angle with respect to the normal. Find the critical angle for total internal reflection for this interface.

Single concave spherical mirrors produce images that

An object that is 4.00 cm tall is placed 18.0 cm in front of a concave mirror having a focal length of 20.0 cm. What is the location of its image in relation to the mirror and what are its characteristics?

A concave mirror having a focal length of magnitude 5.0 cm forms an image 4.0 cm behind the mirror. Where is the object for this image?

A cup that is 6.0 cm tall is in front of a concave lens. The image of the cup is 2.5 cm tall and 7.5 cm from the lens. What is the focal length of the lens?

Which one of the following numbers is the correct magnification produced by a plane mirror?

An object is placed 9.5 cm in front of a convex lens with a focal length of magnitude 24 cm. (a) Where is the image formed and how far is it from the lens? (b) What is the magnification produced by the lens?

How far from a lens having a focal length of +50 mm must the object be placed if it is to form a virtual image that is 3.0 times the size of the object?

Single convex spherical mirrors produce images that

An object is placed to the left of a spherical mirror in front of the mirror. If the image of the object is formed on the right side of the mirror, which of the following statements must be true? (There could be more than one correct choice.)

An upright object is 50 cm from a concave mirror of radius 60 cm. The character of the image is

An object is placed 15 cm from a spherical concave mirror with a focal length of magnitude 20 cm. If the object is 4.0 cm tall, how tall is the image?