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1. Which pair of EM waves is commonly used for communication? A. X-rays and infrared C. radio waves and gamma rays radio waves and microwaves D. infrared and microwaves В. 2. Radio wave is useful in which of the following applications? A. watching television C. sterilizing medical equipment B. treating cancers D. sunbathing 3. All of the following made use of gamma rays except one. Which is it? A. treating tumors B. treating cancer through the process called radiotherapy C. sterilization of water in drinking fountains 14.​

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Answers

1. Which pair of EM waves is commonly used for communication?

C. radio waves and microwaves

Radio wave is used in transmitting TV and radio programs. Microwaves are used to transmit sattelite TV and mobile phones.

2. Radio wave is useful in which of the following applications?

A. watching television

Radio wave transmit TV.

3. All of the following made use of gamma rays except one. Which is it?

Assuming that it's D. because gamma rays can be used for A, B, and C.

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ELECTROMAGNETIC WAVES

1. Which pair of EM waves is commonly used for communication?

B. Radio waves and Microwaves

» Radiowaves are used for wireless communications, internet, and cells towers. Microwaves are commonly used for radars and satellite communication.

2. Radio wave is useful in which of the following applications?

A. Watching television

» Radio waves transport cellular and television signals.

3. All of the following made use of gamma rays except one. Which is it?

» The choices is incomplete. I guess the answer is letter D, since all the choices A, B and C are actual applications of gamma radiation. Gamma is mainly used in medical field for treating cancer, tumors and many more.

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