Question

Light rays travel from vacuum into a water whose refractive index is 1.5
the angle of incidence is 30°. Calculate the angle of refraction inside the water.​

Answer 1

sinr

sini

​  

=  

μ  

1

​  

 

μ  

2

​  

 

​  

 

sinr

sin2r

​  

=  

1

μ

​  

 

sin r

2sinr cos r

​  

=μ

r=cos  

−1

(  

2

μ

​  

)

So the incident angle =2cos  

−1

(  

2

μ

​  

)

How satisfied are you with the answer?

Answer 2

Answer:

angle of incidence is 30 degree

so the angle of refraction is (90-30)=60°

Explanation:

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