A monochromatic light passes through a glass slab (refractive index=3/2) of thickness 90 cm in time t1 If it - Physics - Ray Optics And Optical Instruments

Question

A monochromatic light passes through a glass slab (refractive
index=3/2) of thickness 90 cm in time t1 If it takes a time t2 to
travel the same distance through water (refractive index=4/3) The
value of (t1_ t2) is
1)5*10^_8s 2)5*10^_10s 3)2 5*10^_10s 4)2 5 *10^_8s

Vara · Accepted Answer

Dear
Student,
Please find below
the solution to the asked query:
Case I:t1=dv1   =dcμ1   =dμ1c   =0
9×323×108   =4
5×10-9 sCase II:t2=dv2   =dcμ2   =dμ2c   =0
9×433×108   =4
0×10-9 sDifference of t1 and t2 :△t=4
5×10-9-4 0×10-9      =0
5×10-9 s      =5×10-10 s

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A monochromatic light passes through a glass slab (refractive index=3/2) of thickness 90 cm in time t1. If it takes a time t2 to travel the same distance through water (refractive index=4/3).The value of (t1_ t2) is 1)5*10^_8s 2)5*10^_10s 3)2.5*10^_10s 4)2.5 *10^_8s

A monochromatic light passes through a glass slab (refractive index=3/2) of thickness 90 cm in time t1. If it takes a time t2 to travel the same distance through water (refractive index=4/3).The value of (t1_ t2) is
1)510^_8s 2)510^_10s 3)2.510^_10s 4)2.5 10^_8s