Which statement is not correct for ultrasound and X-rays?
A
Both can be refracted
B
Both can be diffracted
C
Both can be polarised
D
Both can be reflected - AQA - A-Level Physics - Question 14 - 2017 - Paper 1
Question 14
Which statement is not correct for ultrasound and X-rays?
A
Both can be refracted
B
Both can be diffracted
C
Both can be polarised
D
Both can be reflected
Worked Solution & Example Answer:Which statement is not correct for ultrasound and X-rays?
A
Both can be refracted
B
Both can be diffracted
C
Both can be polarised
D
Both can be reflected - AQA - A-Level Physics - Question 14 - 2017 - Paper 1
Step 1
Both can be refracted
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Answer
Both ultrasound and X-rays can undergo refraction as they pass through different media, bending their paths according to Snell's law.
Step 2
Both can be diffracted
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Answer
Both ultrasound and X-rays exhibit diffraction when they encounter obstacles or openings, allowing them to bend around edges.
Step 3
Both can be polarised
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Answer
Only X-rays can be polarised because they are electromagnetic waves, whereas ultrasound, being a mechanical wave, cannot be polarised.
Step 4
Both can be reflected
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Answer
Both ultrasound and X-rays can be reflected when they encounter a boundary between different media.
