A. 2.81jg−¹
B. 6.25Jg−¹
C. 8.89Jg−¹
D. 168.75Jg−¹
E. 5333.33Jg−¹

Correct Answer:

Option D = 168.75Jg−¹

Explanation

pt = ml 80

90 x 5 x 60 = 160 x L

L = 27000/160

= 168.75Jg−¹

SEE ALSO  The refractive index of a given transparent medium is 1.4. Which of the following is the minimum internal angle for total internal reflection to take place in the medium?

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