1. (a) Draw one line from each use of wave to the matching electromagnetic wave - Edexcel - GCSE Physics Combined Science - Question 1 - 2020 - Paper 1
Question 1
1. (a) Draw one line from each use of wave to the matching electromagnetic wave.
One line has been drawn for you.
- to detect forged banknotes
- to detect broken bo... show full transcript
Worked Solution & Example Answer:1. (a) Draw one line from each use of wave to the matching electromagnetic wave - Edexcel - GCSE Physics Combined Science - Question 1 - 2020 - Paper 1
Step 1
to detect forged banknotes
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Answer
radio waves
Step 2
to detect broken bones
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X-rays
Step 3
for night-vision cameras
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infrared waves
Step 4
to sterilise medical equipment
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gamma rays
Step 5
Which of these colours of visible light has the highest frequency?
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Answer
B. green
Step 6
Describe how the brightness changes with wavelength.
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Answer
The brightness increases as the wavelength decreases, peaking at approximately 420 nm, before decreasing again as the wavelength further decreases.
