A very thin film, in reflected white light appears -

violet

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white

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black

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red

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Solution

The correct option is C black
When the film is thin, $t \to 0$ , so, path difference $= λ / 2$ , which is a condition of destructive interference.

Therefore, in reflected light, the film appears black.

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A very thin film, in reflected white light appears -

The correct option is C blackWhen the film is thin, t→0, so, path difference =λ/2, which is a condition of destructive interference. Therefore, in reflected light, the film appears black.

The correct option is C black
When the film is thin, $t \to 0$ , so, path difference $= λ / 2$ , which is a condition of destructive interference.

Therefore, in reflected light, the film appears black.