Using Light Answers

4 verified answers

Which is one advantage of using a reflecting telescope instead of a refracting telescope?

Reflecting telescopes are less expensive.

Reflecting telescopes produce clearer images.

Reflecting telescopes require only concave lenses.

Reflecting telescopes usually take up less space.

Which is a use of fiber optics?

correcting vision problems

transmitting telephone signals

gathering light from distant objects

writing and reading CDs and DVDs

Which best explains how fiber-optic technology has improved communication?

It has eliminated the need to send audio data through telephones.

It has allowed for faster transmission of Internet signals.

It has increased the speed at which light travels through space.

It has reduced society’s reliance on devices such as computers and cell phones.

How are reflecting telescopes similar to devices that produce laser light?

Both use crystals to produce a beam of light.

Both have convex lenses that magnify objects.

Both have concave lenses that magnify objects.

Both use mirrors to reflect a beam of light.

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