Bennett Mechanical Test Acoustics and Optics 2

Question 1

Sound travels fastest through which medium?

Accepted Answer

Steel

Answer

Air

Answer

Water

Answer

A vacuum

Question 2

When light passes from air into water, it bends because the light:

Accepted Answer

Slows down

Answer

Speeds up

Answer

Stops briefly

Answer

Changes color

Question 3

An echo is produced when sound waves:

Accepted Answer

Reflect off a surface

Answer

Pass through a wall

Answer

Are absorbed completely

Answer

Speed up in air

Question 4

A higher-frequency sound wave is heard as a sound with a:

Accepted Answer

Higher pitch

Answer

Lower pitch

Answer

Greater loudness

Answer

Slower speed

Question 5

A convex (converging) lens is commonly used to:

Accepted Answer

Magnify objects

Answer

Spread light apart

Answer

Block all light

Answer

Reflect images

Question 6

Which property of a sound wave determines its loudness?

Accepted Answer

Amplitude

Answer

Frequency

Answer

Wavelength

Answer

Speed

Question 7

A flat mirror produces an image that is:

Accepted Answer

Reversed left-to-right

Answer

Upside down

Answer

Magnified

Answer

Blurry