Derive the condition of maxima and minima due to interference of light reflected from thin film of uniform thickness

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written 9.2 years ago by

vermavarsha432 • 1.0k

modified 5.6 years ago by

sanketshingote • 100

advanced engineering physics

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written 6.9 years ago by

vermavarsha432 • 1.0k

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Consider a thin film of uniform thickness (t) and R.I (μ)

On Reflected side,

The ray of light R1 and R2 will interfere.

The path difference between R1 and R2 is,

Δ = μ(BC + CD) − BG

BC = CD = t/cosr..........(1)

Now,

BD = (2t) tan r .......(2) …

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5.0kviews

written 9.2 years ago by

vermavarsha432 • 1.0k

Consider a thin film of uniform thickness (t) and R.I (μ)

On Reflected side,

The ray of light BF and DE will interfere. The path difference between BF and DE is,

$$Δ = μ (BC + CD) - BG $$

$$BC = CD = \frac{t}{cos r}..........(1)$$

Now,

BD = (2t) …

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