True or False: 1. Dispersion of light by a prism makes the components of white l

Question

True or False:

1. Dispersion of light by a prism makes the components of white light visible.

2. If you shake and electrically charged object back and forth you produce an electromagnetic wave.

3. Violet light has nearly twice the frequency of red light and half the wavelength.

4. Sound waves are bent in air as speed changes with different temperature.

5. The pitch of sound decreases when the source of the sound wave moves toward you,
and it increases when the source moves away.

6.The photoelectric effect of light depends on frequency.

7. When looking in a mirror your image is as far behind the mirror as you are in front of it.

8. In air sound travels a million times faster than light.

Explanation / Answer

1. True

Dipsersion is the splitting of white light into its components when it passes through a prism.

2. True.

A moving charge produce anelectric current. A flow of electric current will produce magnetic field. Thus, shaking an electrically charged object back and forth will produce an electromagnetic wave.

3. True.

The freqeuncy of voilet light ranges from 668

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