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Grade 10IIT JEE Entrance Exam

Light travels through a glass plate of thickness t and refractive index u. If c is the speed of light in vacuum, the time taken by light to travel this thickness of glass is

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Profile image of Hrishant Goswami
12 Years agoGrade 10
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2 Answers

Profile image of Navjyot Kalra
12 Years ago

(d)

        Total thickness = t; Refrative index = m

        Speed of light in Glass plate=c/u

Profile image of Spandana
7 Years ago
A):d
N(refractive index)=c/v
1/n=v/c
V=c/n
Time taken by light to travel the thickness of the glass plate =distance/velocity
                            =t/c/u
                             =ut/c.
 

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