A ray of light originates in medium A and isincident upon medium B . For which o

Question

A ray of light originates in medium A and isincident upon medium B. For which one of thefollowing pairs of indices of refraction for A andB is total internal reflection notpossible?
             n A          n B
A)        1.36        1.00
B)        1.26        1.15
C)        2.54        1.63
D)        1.28        1.36
E)        1.12        1.06



a. A
b. E
c. C
d. B
e. D A ray of light originates in medium A and isincident upon medium B. For which one of thefollowing pairs of indices of refraction for A andB is total internal reflection notpossible?
             n A          n B
A)        1.36        1.00
B)        1.26        1.15
C)        2.54        1.63
D)        1.28        1.36
E)        1.12        1.06

A E C B D

Explanation / Answer

Total internal reflection occurs only when light passes fromdenser to rarer medium. i.e., option ( D ) is correct n A = 1.28 nB = 1.36

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