Unit 4 - Concepts and Units 2

Intensity in sound is called:

• Loudness

• Brightness

• Power

• Energy

Electromagnetic Spectrum is

• All different kind of frequencies for EM waves.

• All different kind of frequencies for all waves.

• All different kind of frequencies for sound waves.

The UV rays have ...

• higher frequency than Infrared

• higher frequency than Gamma rays

• higher wavelength than Infrared

• lower wavelength than Gamma rays

The X-rays have ...

• lower frequency than UV rays

• lower frequency than Gamma rays

• higher wavelength than Infrared

• lower wavelength than Gamma rays

The wavelength of the Infrared is ...

• greater than red color

• smaller than blue light

• greater than microwaves

• smaller than UV rays

The frequency of the blue color is ...

• greater than red color's ƒ

• greater than UV's ƒ

• Greater than gamma's ƒ

The frequency of the blue color is ...

• c / 650nm

• c / 650x10^-6 m

• c / 450nm

• c / 450x10^-6m

Destructive interference in a spot caused by two waves is

• When crest and trough meet

• when crest and crest meet

Is the maximum displacement in a standing wave

• antinode

• node

• first harmonics

• in phase

the wavelength for the fundamental harmonic in standing waves on strings and open-open pipes is