Question

In YDSE films of thickness t1 and t2 and refractive index

Answer 1

Answer:

We have

(t

1

−t

2

)(n−1)=

2

λ

and [(t

1

+t

2

)](n−1)=2λ

⟹3t

1

=5t

2

−1

t

1

+t

2

(t

1

−t

2

)

=

4

1

⟹4t

1

−4t

2

=t

1

t

2

⟹3t

1

=5t

2

⟹

t

1

t

2

=

5

3

⟹x=3