Photo AI
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 putti... 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
Complete the sentence by putting a cross (✗) in the box next to your answer.
Answer
The correct answer is D: ionising radiations emitted by radioactive sources. X-rays are indeed a form of ionising radiation, which means they have enough energy to remove tightly bound electrons from atoms, thereby creating ions.
Step 2
Explain how effective this would be as a precaution.
Answer
Wearing sunglasses may offer minimal protection against direct exposure to X-rays; however, they are not effective against the ionising nature of X-rays. Sunglasses can block some visible light but do not shield against the harmful effects of ionising radiation, thus making them an inadequate precaution.
Step 3
Step 4
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 is marketed as safer than the X-ray device due to its low energy nature. However, precautions must still be taken to ensure safety, as any device that affects skin or hair can have side effects. It is important to assess the risks such as burns or discomfort versus the benefits, keeping in mind regulation and testing standards before general sale is approved.