Which colour of visible light has highest energy?

1. Red
2. blue
3. violet
4. yellow
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Answer: C
Explanation:
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of the waves that make up visible light, which colour has shorter wavelength?

1. Red
2. blue
3. violet
4. yellow
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Answer: C
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Which colour of visible light has lowest energy?

1. Red
2. blue
3. violet
4. yellow
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Answer: A
Explanation:
• Energy and wavelength are inversely related
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All objects including you, give off radiation;

1. ultravoilet
2. Visible
3. I.R
4. all of these
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Answer: C
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Which radiation is reffered as heat radiation?

1. ultravoilet
2. Visible
3. I.R
4. all of these
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Answer: C
Explanation:
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As the objects get hotter, they give off more;

1. U.V radiation
2. I.R radiations
3. gamma rays
4. Visible rays
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Answer: B
Explanation:
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Remote controls make use of;

1. U.V radiation
2. I.R radiations
3. gamma rays
4. Radio waves
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Answer: B
Explanation:
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The source of all types of radiation is:

1. sun
2. nuclear reactions
3. hot bodies
4. electronic transitions
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Answer: A
Explanation:
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The radiation used in wireless communication is;

1. ultravoilet rays
2. I.R
3. gamma rays
4. Radio waves
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Answer: D
Explanation:
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Which radiation is used in wireless computer networks:

1. ultravoilet rays
2. I.R
3. gamma rays
4. Radio waves
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Answer: D
Explanation:
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