1) critical angle is the angle of incident of high medium density when angle of refraction is equal to___? a) 180° b) 60º c) 90º 2) 2 condition for total internal reflection to occurs is when angle of incident must exceed the critical angle & when light travel from? a) same medium of optical density b) high to low medium of optical density c) low to high medium of optical density 3) law that state refractive index is equal to ratio of 1 over sin c ( critical angle) a) Lenz's b) Snell's c) Refraction 4) for total internal reflection to occur the medium of incident ray must always in ___ medium density a) high b) low c) same 5) Find the phenomena that not related to total internal reflection a) mirage b) rainbow c) optical fibre d) cat eye reflector e) sparkle of wine glass f) periscope

KSSM F4 PHYSICS 6.2 Total internal reflection

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