Chap 13 Quiz

Which of the following is not a component of the electromagnetic spectrum?

• light waves

• radio waves

• microwaves

• sound waves

All of the following statements about electromagnetic waves are true except which one?

• Electromagnetic waves are distinguished by their different shapes.

• Electromagnetic waves are composed of oscillating electric and magnetic fields.

• Electromagnetic waves are transverse waves.

• Electromagnetic waves move in a direction that is perpendicular to the electric and magnetic fields.

Given the wave speed equation c = f*lambda, what is the relationship between frequency (f) and wavelength (lambda)?

• direct

• exponential

• inverse

• none of the above

Which of the following is approximately equal to the currently accepted value for the speed of light?

• 3.00 × 10⁶ m/s

• 3.00 × 10⁸ m/s

• 30.0 × 10⁸ m/s

• 3.00 × 10⁹ m/s

The speed of light is incredibly fast. Physicists consider it to be

• finite

• infinite

• immeasurable

• variable

The intensity of light depends on the

• speed of the light wave and the amount of light energy emitted from a source.

• distance from the light source and the type of surface the light strikes.

• amount of light energy emitted from a source and the distance from the light source.

• size of the surface area which the light strikes and the distance from the light source.

If the distance from a light source is increased by a factor of 5, the illuminance

• also increases by a factor of 5.

• decreases by a factor of 25.

• increases by a factor of 25.

• decreases by a factor of 5.

Which of the following statements is not true about the reflection of light?

• All substances absorb at least some incoming light and reflect the rest.

• Perfect reflectors are common.

• The manner in which light is reflected from a surface depends on the surface’s smoothness.

• No surface is a perfect reflector.

What type of light reflection occurs when light is reflected from a rough, textured surface?

• diverse

• variegated

• specular

• diffuse

In how many directions is light reflected from a smooth surface?

• one

• two

• multiple

• infinite