Question

a glass prism of angle A and refractive index 1.5 produce the minimum deviation equal to 40 calculate angle of prism​

Answer 1

Answer:

Let δ  

m

​  

 be the angle of minimum deviation A=δ  

m

​  

 

A=δ  

m

​  

 

μ=  

sin(  

2

A

​  

)

sin  

2

(A+δ  

m

​  

)

​  

 

​  

 

1.5=  

sin(  

2

A

​  

)

sin(  

2

A+A

​  

)

​  

 

1.5=  

sin(  

2

A

​  

)

sin2(  

2

A

​  

)

​  

=  

sin(  

2

A  

)

2sin  

2  

cos  

2

A  

1.5=2cos  

2

A

0.75=cos  

2

A

2

A  

=cos  

−1

(0.75)

2

A  

=41  

o

 

A=82  

o

 

​

Explanation:

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