An Isosceles Glass Prism With Base Angles 40 Degrees Is Clamped Over A Tray Of Water In A Position Such That
The Base Is Just Dipped In Water. A Ray Of Light Incident Normally On One Of The Inclined Face Suffers Total
Internal Reflection At The Base. Find The Minimum Value Of The Refractive Index Of The Glass Which The Prism Is
Made Up Of .
Details And Assumptions
Refractive Index Of Water = 4/3
sin (40) = 0.64 (degrees)
Give The Answer To 2 Decimal Places
Source- KVPY 2015 (SA Stream)
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