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Card 6
Front
What do x-rays form images of?
Back
Card 7
Front
Excluding bone, what else (that is naturally found) in the body may be (with human interference) seen using x-rays?
Back
Card 8
Front
The human ear can detect frequencies between which two values?
Back
Card 9
Front
What are sound waves with a frequency higher that 20,000Hz called?
Back
Card 10
Front
Can x-rays be used to detect cancerous tumours?
Back
Card 11
Front
What reflects ultrasound waves?
Back
Card 12
Front
What is refraction?
Back
Card 13
Front
Why does refraction occur?
Back
Card 14
Front
What is refractive index?
Back
Card 15
Front
How can refractive index be calculated?
Back
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