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     EduGorilla 
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    Rahul places a candle in front of three cardboards each with a hole on them and observes on the other side. What inference does he make from the given experiment?

    Options :-

    1. Light rays are very thin.

    2. Light rays travel in straight lines.

    3. The eye can only see a luminous body.

    4. A beam of light is made up of a lot of light rays.

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