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Plane waves refracted for air to water u...

Plane waves refracted for air to water using Huygens principal `a,b,c,d,e` ae length on the diagram.The refractive index of water wrt air is the ratio.

A

`a//e`

B

`b//`e

C

`b//d`

D

`d//b`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaANB`
`sin i=(b)/(C )`
`DeltaAN'B`
` sinr =(d)/(C )` snell's law
`mu_(a)sin i=mu_(w)sinr`
`._(a)mu_(w)=(sin i)/(sin r) rArr ._(a)mu_(w)=(b)/(c )xx(c )/(d)=(b)/(d)`
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