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Science

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Which region of electromagnetic spectrum is used in fiber optic technology? *

a. X-ray

b. Infrared

c. microwave

d. ultraviolet

2. Why does using fiber optic cable is more practical than using copper cable? *

I. fiber optic cables are lighter and thinner

II. Fiber optic cables do not lose signal strength at high frequency.

III. Fiber optic cable offers greater bandwidth as compared to copper cable of the same diameter.

a. I and II only

b. I and III only

c. II and III only

d. I, II, and III

3. Money bills are printed with water marks to avoid counterfeiting. Which region of electromagnetic spectrum can be used to see these marks? *

a. X-ray

b. Infrared

c. Microwave

d. Ultraviolet

4. Which of the following electromagnetic waves is used to check baggage in airports as part of security measures? *

a. lasers

b. X-rays

c. visible light

d. ultraviolet radiation

5. Which of the following statements is/are TRUE about X-rays? *

I. It is discovered by Wilhelm Conrad Roentgen.

II. Soft X-rays can be applied in the medical field.

III. Hard X-rays have no beneficial application at all.

a. I and II only

b. i and III only

c. II and III only

d. i, II and III

Sagot :

STEPHMASULA27IN STEPHMASULA27IN

Answer:

1.A

2.A

3.C

4.B

5.A

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