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Two transparent plastic sheets of red an...

Two transparent plastic sheets of red and blue colour overlap as shown in the Fig. An observer looks at a clear sky through the sheets. What can you say about the colour and brightness of light coming through sections 1, 2 and 3 (see Fig.)

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The correct Answer is:
Section 1: Red colour, less bright than usual
Section 2: Blue colour, less bright than usual
Section 3: Dark, almost no light.
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