O 5/6/2016 10:00 PM CA 87.5/100 4/27/2016 09:56 PM Gradebook Print Calculator Le
ID: 1510924 • Letter: O
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O 5/6/2016 10:00 PM CA 87.5/100 4/27/2016 09:56 PM Gradebook Print Calculator Les Periodic Table Question 5 of 18 Incorrect Map A pling Decide which statements are true and false about total internal reflection. True False Simple reflection of light off a silvered mirror is more When light hits a boundary at an angle efficient than total internal reflection, so mirrors greater than the critical angle, are often used instead of prisms in optical instruments it will undergo total internal reflection to minimize light loss. A larger critical angle means that total Fiber optic cables are a practical application internal reflection is more likely to occur of the phenomenon of total internal reflection O Previous Check Answer Next Ext HintExplanation / Answer
second and fourth statements are true
to minimize the loss of light the mirrors are not used instead of prisms in optical instruments.
regarding total internal reflection
critical angle is defined as the minimm angle of incidece at which the light ray just grazes the boundary between two surfaces(denser and rarer).
if the critical angle is less then light can easily , totally interally reflects in to the same medium, so third statement
A larger critical angle means that total internal reflection is more likely to occur is not true.
remaining statemets are true if the angle of incidence is greater than the critical angle , Total internal refelction takes place True
and
Fiber optic cables are a practical application of the phemomenon of total internal reflection. True
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