Final Review Optics and Light/Color

If you stand three meters in front of a plane mirror, how far away would you see yourself in the mirror

• 1.5 m

• 3 m

• 6 m

• There's no way to know

Which of the following best describes the image formed by a plane mirror?

• virtual, inverted and enlarged

• real, inverted and reduced

• virtual, upright and the same size as object

• real, upright and the same size as object

The best definition of refraction is ____.

• passing through a boundary

• bouncing off a boundary

• changing speed at a boundary

• changing direction when crossing a boundary

Which of the following describes what will happen to a light ray incident on an glass-to-air boundary at an angle of incidence greater than the critical angle?

• total internal reflection

• total transmission

• partial reflection, partial transmission

• partial reflection, total transmission

Which of the following statements are true of converging lenses? Identify all that apply.

• Converging lenses are thicker at the center than they are at the edges.

• If the bottom half of a converging lens is covered, then the top half of the image will not be visible.

• Converging lenses only produce real images.

• Converging lenses can produce images which are both magnified and reduced in size.

• Converging lenses only produce inverted images.

Which of the following statements are true of total internal reflection (TIR)? Include all that apply.

• TIR can only occur when light approaches a boundary and is incident within the most dense media.

• TIR can only occur when the angle of incidence is greater than the critical angle.

• TIR causes a portion of the light to refract along the boundary and the rest to be reflected.

• When TIR occurs, the reflected light follows the laew of reflection

• If TIR occurs at the boundary of glass and air, then it is possible that the light is traveling within air and heading towards the glass.

A single disturbance that moves from point to point through a medium is called a ___.

• pulse

• wavelength

• periodic wave

• period

If the particles of the medium are vibrating to and fro in the same direction of energy transport, then the wave is a ____ wave.

• transverse

• standing

• sound

• longitudinal

When the particles of a medium are vibrating at right angles to the direction of energy transport, then the wave is a ____ wave

• longitudinal

• sound

• standing

• transverse

The main factor which effects the speed of a sound wave is the ____.

• properties of the medium

• loudness of the sound

• intensity of the sound

• amplitude of the sound wave

• pitch of the sound