A thin glass slide (n = 1.53) that is 0.470 μm thick and surrounded by air is illuminated by a monochromatic electromagnetic wave. The wave is incident along the normal to the slide.

Please show step by step work please and thanks!

Part A

What is the lowest frequency of the wave that will produce an intensified reflected wave?

Express your answer in hertz to three significant figures.

Part B

What is the lowest frequency of the wave that will produce a cancelled reflected wave?

Express your answer in hertz to three significant figures.

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