When a thin transparent plate of Refractive Inex 1.5 is introduced in one of the interfearing becomes, 20 fringes shift. If it is replaced by another thin plate of half the thickness and of R.I. 1.7 the number of fringes that undergo dis place-ment is

When a thin transparent plate of Refractive Inex 1.5 is introduced in

1.	When a thin transparent plate of Refractive Inex 1.5 is introduced in one of the interfearing becomes, 20 fringes shift. If it is replaced by another thin plate of half the thickness and of R.I. 1.7 the number of fringes that undergo dis place-ment is
Answer» 23 14 28 7 Answer :B

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When a thin transparent plate of Refractive Inex 1.5 is introduced in one of the interfearing becomes, 20 fringes shift. If it is replaced by another thin plate of half the thickness and of R.I. 1.7 the number of fringes that undergo dis place-ment is

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