The diagram shows the relative positions of electromagnetic radiations in terms of their wavelength - Leaving Cert Physics - Question b - 2006
Question b
The diagram shows the relative positions of electromagnetic radiations in terms of their wavelength.
gamma rays A UV light IR microwaves B
(i) Name the radi... show full transcript
Worked Solution & Example Answer:The diagram shows the relative positions of electromagnetic radiations in terms of their wavelength - Leaving Cert Physics - Question b - 2006
Step 1
Name the radiations marked A and B.
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Answer
A = X-rays
B = radio waves / VHF / UHF etc.
Step 2
Give one property which is common to all electromagnetic radiations.
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Answer
All electromagnetic radiations travel at the speed of light.
Step 3
Which one of the radiations has the shortest wavelength?
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Answer
Gamma rays have the shortest wavelength.
Step 4
Describe how IR radiation is detected.
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IR radiation is detected using a thermometer or heat sensor. It can also be captured on a thermographic or photographic film.
Step 5
Give one use for microwaves.
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Answer
Microwaves are used in cooking, such as in microwave ovens.
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