level: light
Questions and Answers List
level questions: light
| Question | Answer |
|---|---|
| effects of image in mirror | same size, same colour but is inverted, and it is virutal |
| example of object relflecting off mirror to the eye | here |
| refractive index formula | sin i (incident)/ sin r(refraction) |
| if incident angle is the less than the criticle angle.... | we get reflection and refraction |
| if incident angle is the same as the criticle angle.. | refraction along the boundary occurs |
| if incident angle is greater than the critical angle | total internal reflection occurs |
| how do optical fibres work | core of fibre made of glass with high refractive index, cladding is made out of glass with lower refractive index, light entering core is at an angle greatre than the critical angle |
| examples of the use of optical fibres | communication, endoscope. |