Light and Sound - Part 1

What is the color of the visible light with the longest wavelength?

• blue

• red

• violet

• yellow

Why is that during a thunderstorm, the flash of lightning is seen before the thunderclap is heard?

• Lightning is produced before thunder.

• The eye is more sensitive to the ear.

• Light travels faster than sound.

• Sound travels faster than light.

According to the Law of Reflection:

• The angle of reflection is greater than the angle of incidence.

• The angle of reflection is equal to the angle of incidence.

• The angle of reflection is smaller than the angle of incidence.

• opaque
• translucent
• transparent

This optical device is a:

• Convex

  Lens

• Concave

  Lens

• Convex

  Mirror

• Concave

  Mirror

Mirrors that bulge out are called:

• Concave mirrors
• Convex mirrors
• Plane mirrors

Which explains why the fork looks different under water?

• light can't pass through the glass
• the wavelength of light lengthens
• the amount of light increases when going through water
• light is refracted at an angle

The Law of Reflection:
The angle of incidence is _________ the angle of reflection

• bigger than
• the same as
• smaller than

Diagram shows an object P placed in front of a convex mirror.

What are the characteristics of the image formed?

• Real, inverted and diminished

• Real, upright and magnified

• Virtual, inverted and magnified

• Virtual, upright and diminished

Which wave behavior occurs on a mirror?

• Reflection

• Diffraction

• Refraction

• Interference

• Transmission