1. How do the electromagnetic waves are arranged from radio wave to gamma ray in terms of wavelength?
A. Increasing wavelength
B. Decreasing wavelength
C. From constant to infinite value of wavelength
D. From infinite to constant value of wavelength
2. What is TRUE between the energies carried by radio wave and microwave?
A. Radio wave carries greater amount of energy than microwave.
B. Radio wave carries lesser amount of energy than microwave.
C. Radio wave and microwave both carry the same value of energy.
D. Radio wave does not carry energy at all whereas microwave carries maximum amount of energy.
C. UV ray
3. Which of the following electromagnetic waves has the least frequency?
A. microwave B. radio wave
D. visible light
4. Which of the following BEST describes the electromagnetic spectrum?
. A. continuum of electromagnetic waves
B. A wave which carries both magnetic and electric field
C. A mechanical wave which travels along a medium like air
D. A ray of white light dispersed into a band of rainbow color
5. Which of the following statements is correct?
A. As the frequency of a wave increases, the wavelength also increases
B. As the frequency of a wave decreases, the energy increases.
C. As the wavelength of a wave increases, the energy also increases.
D. As the wavelength of a wave decreases, the frequency increases.
6. Which pair of EM waves is commonly used for communication?
A. X-rays and infrared
C. Radio waves and gamma rays
B. Radio waves and microwaves
D. Infrared and microwaves
7. Which of the EM waves below is used to remove most forms of microbiological contamination from
water?
A. Infrared rays
C. Radio waves
B. Microwaves
D. Ultraviolet rays
8. Radio wave is useful in which of the following applications?
A. watching television
C. sterilizing medical equipment
B. treating cancers
D. sunbathing
Answers
Answer:
1) B
2)B because E=hc/lambda so wavelength of radio waves is more so energy will be less
3)B Radio waves as they have max wavelength
4)B
5)D
6)B
7)B Microwaves
8)A Watching tv
Answer:
Radio wave is useful in which of the following applications watching television.
Explanation:
From the above question,
They have given :
1. How do the electromagnetic waves are arranged from radio wave to gamma ray in terms of wavelength?
A. Increasing wavelength
B. Decreasing wavelength
C. From constant to infinite value of wavelength
D. From infinite to constant value of wavelength
2. What is TRUE between the energies carried by radio wave and microwave?
A. Radio wave carries greater amount of energy than microwave.
B. Radio wave carries lesser amount of energy than microwave.
C. Radio wave and microwave both carry the same value of energy.
D. Radio wave does not carry energy at all whereas microwave carries maximum amount of energy.
3. Which of the following electromagnetic waves has the least frequency?
A. microwave
B. radio wave
C. UV ray
D. visible light
4. Which of the following BEST describes the electromagnetic spectrum?
A. continuum of electromagnetic waves
B. A wave which carries both magnetic and electric field
C. A mechanical wave which travels along a medium like air
D. A ray of white light dispersed into a band of rainbow color
5. Which of the following statements is correct?
A. As the frequency of a wave increases, the wavelength also increases
B. As the frequency of a wave decreases, the energy increases.
C. As the wavelength of a wave increases, the energy also increases.
D. As the wavelength of a wave decreases, the frequency increases.
6. Which pair of EM waves is commonly used for communication?
A. X-rays and infrared
B. Radio waves and microwaves
C. Radio waves and gamma rays
D. Infrared and microwaves
7. Which of the EM waves below is used to remove most forms of microbiological contamination from
water?
A. Infrared rays
C. Radio waves
B. Microwaves
D. Ultraviolet rays
8. Radio wave is useful in which of the following applications?
A. watching television
C. sterilizing medical equipment
B. treating cancers
D. sunbathing
ANSWER:
B. Decreasing wavelength
B. Radio wave carries lesser amount of energy than microwave.
B. Radio wave
A. Continuum of electromagnetic waves
D. As the wavelength of a wave decreases, the frequency increases.
B. Radio waves and microwaves
D. Ultraviolet rays
A. Watching television
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