Exam 7: Optics and Wave Effects

A light wave traveling in air strikes a plane mirror surface at an angle of 30° relative to the normal. The wave is reflected at an angle of

A liquid crystal display (LCD) using a "twisting" effect in the display involves

A(n) ______________ consists of many narrow parallel slits very close together.

A lens that is thicker at the edge than at the center is

A change in the direction of a wave resulting from its meeting an opaque material is called ______________.

The ratio of the speed of light in a vacuum to the speed of light in a medium is known as the index of

For normal vision, an object can be seen clearly when it is beyond the ______________.

Liquid crystal displays (LCDs) make use of the wave phenomenon called ______________.

An object 30 cm in front of a concave spherical mirror (f = 10 cm) is moved toward the mirror until it is 20 cm from it. Sketch ray diagrams for these cases and estimate the factor by which the image magnification changes.

When light enters a denser medium, the speed of the light ______________.

Dispersion occurs in a medium because

The speed of light in diamond is 1.24 × 10⁸m/s. What is the index of refraction of diamond?

For normal vision, an object can be seen clearly when it is beyond the

A plane mirror stands vertically on a table. A ruler lies on the table in such a position as to make an angle of 30° with the mirror. Determine the angle between the ruler and its image.

The speed of light in a particular transparent medium is 5/8 the speed of light in a vacuum. What is the index of refraction of the material?

The bending of light rays around corners is called

Reflection from smooth surfaces is called ______________ reflection.