Question

49.
time ,
Ray Optics
a 8/5
b) 5/8
c) 2.5
d) 11/5
Light from sodium lamp (a = 6000 A') passes
through tank of glycerine (u = 1.6), 20 m long in
If it takes time t to travel the same tank
when filled with air (u = 1), what is difference
between t, and t
a 4 x 10-8 s
b) 4 x 10-4 min
c) 4 x 108
d) 4 x 10-10 S
Light passes obliquely at a very small angle o
incidence from vacuum into a mediu in which
,
50.​

Answer 1

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