GCSE Edexcel Physics Combined Science The Electromagnetic Spectrum: 1. (a) Draw one line from each u

Question

1. (a) Draw one line from each use of wave to the matching electromagnetic wave.
One line has been drawn for you.

use of wave            
--------------------------- 
electromagnetic wave

- to detect forged banknotes   → radio waves     
- to detect broken bones       → microwaves     
- for night-vision cameras     → infrared waves    
- to sterilise medical equipment → visible light
                                   → ultraviolet waves 
                                   → X-rays 
                                   → gamma rays

(b) Ultraviolet light has a higher frequency than infrared light.
Which of these colours of visible light has the highest frequency?  
A blue   
B green   
C orange   
D yellow

(c) Figure 1 shows how the brightness of a source of light changes with wavelength.
Describe how the brightness changes with wavelength.

Figure 1

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

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

to detect forged banknotes

to detect broken bones

for night-vision cameras

to sterilise medical equipment

Which of these colours of visible light has the highest frequency?

Describe how the brightness changes with wavelength.

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