Exam 7: Waves

Polarization is similar to

Light of which of the following colors has the shortest wavelength?

In an electromagnetic wave, the electric field is

A converging lens of focal length f produces a real image of a real object when the object is

A pure musical note causes a thin wooden panel nearby to vibrate with the same frequency.This is an example of

A 70-dB sound relative to a 40-dB sound is more intense by a factor of

Relative to its object, a real image formed by a lens is always

The image the lens of the eye forms on the retina is

Sound waves whose frequency is 300 Hz have a speed relative to sound waves in the same medium whose frequency is 900 Hz that is

Relative to the focal length of a wide-angle camera lens, the focal length of a telephoto lens is

Sound waves travel slowest in

A changing electric field gives rise to

Of the following kinds of waves, those that cannot be polarized are

Light of which of the following colors has the lowest frequency?

An example of a wave that is partly longitudinal and partly transverse is a

The greater the decibel (dB) level of a sound wave, the