Light reflected from the front surface of a densest flint windowpane (n = 1890) has an intensity I1. Light entering the glass undergoes multiple reflections. Let I2 be the intensity of light reflected after only one reflection at the back surface of the glass. Find the ratio I2/I1. Assume normal incidence

Light reflected from the front surface of a densest flint windowpane (n = 1890) has an intensity I1. Light entering the glass undergoes multiple reflections. Let I2 be the intensity of light reflected after only one reflection at the back surface of the glass. Find the ratio I2/I1. Assume normal incidence

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Question

Light reflected from the front surface of a densest flint windowpane (n = 1890) has an intensity I₁. Light entering the glass undergoes multiple reflections. Let I₂ be the intensity of light reflected after only one reflection at the back surface of the glass. Find the ratio I₂/I₁.

Assume normal incidence.

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