A thin sheet of transparent material is surrounded by air. The sheet has an inde

Question

A thin sheet of transparent material is surrounded by air. The sheet has an index of refraction of 1.54, and is illuminated by monochromatic (single wavelength) light of wavelength 553 nm.

(a) Calculate the wavelength of the light in the material. WebAssign will check your answer for the correct number of significant figures. nm Much of the incident light will simply pass through the thin sheet. However, some of the incident light will reflect off of the top surface of the sheet.

(b) Upon hitting this surface, the reflected light will have A) no phase change B) half-wavelength phase change Some of the incident light will pass through the sheet and reflect off of the interface between the sheet and air (i.e., the back surface of the sheet).

(c) The light reflected light off of the back surface will have A or B (same as above)

(d) The light that reflects off of the top surface can interfere with the light that reflects off of the back surface. The equation 2t = m(/n) for this problem describes A)constructive interf. or B) destructive

Explanation / Answer

a) lamda' = lamda/n

= 553 nm/1.54

= 359.1 nm

b) (d) The light that reflects off of the top surface can interfere with the light that reflects off of the back surface. The equation 2t = m(/n) for this problem describes A)constructive interf. or B) destructive

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