Waves and vibrations revision

On a colour television screen, identify the colours of light that are mixed to produce magenta?

• Green and blue

• Green and red

• Red and blue

• Blue, red and green

On a colour television screen, identify the colours of light that are mixed to produce cyan?

• Green and blue

• Green and red

• Red and blue

• Blue, red and green

On a colour television screen, identify the colours of light that are mixed to produce yellow?

• Green and blue

• Green and red

• Red and blue

• Blue, red and green

What is the wavelength of the waves in the picture?

• 12

• 6

• 3

• 18

What is the amplitude of the waves in the picture?

• 12

• 6

• 3

• 18

State a  detector of infrared radiation

• antenna

• Photographic film 

• Geiger-muller tube 

• Black Bulb thermometer 

what type of lens can be used to correct long sight?

• Concave

• Convex

• Control

• Conscript

Which wave has the highest frequency?

• A

• B

• C

• D

Which sound would be the quietest?

• A

• B

• C

• D

Which sound would be the loudest?

• A

• B

• C

• D