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5 (a) The device shown in the picture was invented not long after the discovery of X-rays - Edexcel - GCSE Physics - Question 5 - 2012 - Paper 1
Question 5
5 (a) The device shown in the picture was invented not long after the discovery of X-rays. It emitted X-rays through the window. (i) Complete the sentence by puttin... show full transcript
Worked Solution & Example Answer:5 (a) The device shown in the picture was invented not long after the discovery of X-rays - Edexcel - GCSE Physics - Question 5 - 2012 - Paper 1
Step 1
Step 2
Explain how effective this would be as a precaution.
Answer
Sunglasses would provide limited protection against X-rays because they primarily shield against visible light and UV radiation. X-rays have much higher energy than visible light, and typical sunglasses cannot block this radiation effectively. Therefore, while wearing sunglasses may protect the eyes from direct sunlight and glare, they do not significantly reduce the risk of exposure to X-rays.
Step 3
Step 4
Suggest why people used this device for many years.
Answer
People may have used this device for many years due to a lack of awareness about the potential health risks related to X-ray exposure. The marketing of the device as 'harmless' likely contributed to a perception of safety, and the appeal of a permanent hair removal solution may have outweighed concerns about its safety.
Step 5
By considering the dangers associated with both devices, discuss whether the infrared laser device should be put on general sale to the public.
Answer
The infrared laser device presents significantly fewer risks compared to the X-ray device, as it uses low energy beams that do not carry the same potential for ionizing radiation damage. However, considerations should be made regarding potential harm from improper use, such as burns or other skin damage. It is important to ensure that the infrared laser device is rigorously tested for safety and efficacy and that proper guidelines are established for public use. If these precautions are met, it may be reasonable to place the device on general sale.