Physics P5 0.0 / 5 ? PhysicsEarth in spaceGCSEAQA Created by: Reuben vdBCreated on: 19-10-15 17:48 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. 1 of 8 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. 2 of 8 What type of reflection does an endoscope use? Total Internal Reflection. 3 of 8 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. 4 of 8 What is the most common cause of interferance? Two radiowaves of the same frequency passing over eachother. 5 of 8 What is the difference between scalar and vector? Scalar = Size Vector = Size and direcction 6 of 8 What is the difference between velocity and speed? Velocity has speed and direction and speed. Speed is only a measurement. 7 of 8 Name one of the equations for motion... V = U+AT V(squared) = U(sqaured) + 2AS S = UT + 1/2AT(squared) 8 of 8
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