Which two points represent one wavelength?

• C to A
• A to A'
• B to D'
• A to B

If a light ray is shown on a plane mirror with an angle of incidence of 45 degrees, what is the angle of reflection?

• 15
• 30
• 45
• 90

Which characteristic is common to both sound and light waves?

• They transfer energy
• They are transverse
• They can travel through a vacuum
• They are longitudinal

Using a remote control, you can show that electromagnetic radiation _____________________

• diffracts and accelerates in air
• is a longitudinal wave
• possesses energy inversely proportional to its frequency
• transfers energy without transferring mass

Which waves can be polarized?

• Seismic waves
• Light waves from an incandescent light bulb
• Sound waves from a tuba
• Longitudinal waves

A spoon is placed in a beaker of water. When observed from the side it appears bent. This phenomenon is due to ____________.

• Dispersion
• Refraction
• Reflection
• Diffraction

What kind of image is produced by a plane mirror?

• Virtual and upright
• Real and upright
• Real and inverted
• Virtual and inverted

The photoelectric effect best describes which characteristic of light's duality?

• Particle 
• Wave

Light rays are refracted by a lens. Which of the following allows the two rays to form a real image?

• totally reflected inside the lens
• converge to a single point
• travel parallel to each other
• diverge

If you're standing 12 meters in front of a plane mirror, how far away is your image

• 6
• 12
• 18
• 24