Visible light and microwaves are both electromagnetic waves - Edexcel - GCSE Physics - Question 5 - 2017 - Paper 1
Question 5
Visible light and microwaves are both electromagnetic waves.
(a) (i) Complete the sentence by putting a cross (X) in the box next to your answer.
Electromagnetic w... show full transcript
Worked Solution & Example Answer:Visible light and microwaves are both electromagnetic waves - Edexcel - GCSE Physics - Question 5 - 2017 - Paper 1
Step 1
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
The correct answer is C: all travel at the same speed in a vacuum. This is true because electromagnetic waves propagate through a vacuum at the speed of light, which is approximately 3×108 m/s.
Step 2
Complete the diagram by writing in the four missing colours.
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Answer
The missing colors, arranged from low to high frequency, are: red, orange, green, and violet. Thus, the completed diagram will be:
[red] yellow [green] blue [indigo] violet
low frequency
high frequency
Step 3
State two uses for microwaves.
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