1.

A thick plane mirror shows a number of images of the filament of an electric bulb. Of these, the brightest image is theA. FirstB. SecondC. LastD. Fourth

Answer» Correct Answer - B
A thick mirror forms a number of images. Image is formed by front surface which is unpolished and hence reflects only a small part of light, while second image is formed by polished surface which reflects most of intensity. Hence second image is brightest.


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