Aim: To observe the path of light
Take a cardboard and punch a tiny hole in its middle. In a dark room, hold
the cardboard in one hand and a torch in the other. Light the torch and
place it over the hole on one side of the cardboard, as shown. Observe the
light coming out through the hole from the other side of the cardboard.
Is the path of the light beam straight or curved? ,
......
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Answer:
Straight, because light is always going on straight line.
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