Physics P5

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What is the equation to work out the refarctive index of a material?
Light speed in vacuum / Light speed in substance. Or sin i / sin r.
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Simply expain what total internal reflection is
When the incident ray is at an angle greater than the critical angle. Occurs in a dense material.
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What type of reflection does an endoscope use?
Total Internal Reflection.
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What size does a wave have to be to cause maximum diffraction?
The wave has to be of the same size as the hole that it is passing through.
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What is the most common cause of interferance?
Two radiowaves of the same frequency passing over eachother.
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What is the difference between scalar and vector?
Scalar = Size Vector = Size and direcction
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What is the difference between velocity and speed?
Velocity has speed and direction and speed. Speed is only a measurement.
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Name one of the equations for motion...
V = U+AT V(squared) = U(sqaured) + 2AS S = UT + 1/2AT(squared)
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Card 2

Front

Simply expain what total internal reflection is

Back

When the incident ray is at an angle greater than the critical angle. Occurs in a dense material.

Card 3

Front

What type of reflection does an endoscope use?

Back

Preview of the front of card 3

Card 4

Front

What size does a wave have to be to cause maximum diffraction?

Back

Preview of the front of card 4

Card 5

Front

What is the most common cause of interferance?

Back

Preview of the front of card 5
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