A very small bulb, a rectangular block of plastic, a piece of cardboard, and a s

Question

A very small bulb, a rectangular block of

plastic, a piece of cardboard, and a screen are

placed as shown at right.

Imagine that the room is

darkened and the bulb is

turned on.

If the plastic were removed, would the height of the shadow on the screen increase, decrease, or stay the same? Explain your reasoning, and support your answer with a clear ray diagram.

A very small bulb, a rectangular block of plastic, a piece of cardboard, and a screen are placed as shown at right. Imagine that the room is darkened and the bulb is turned on. If the plastic were removed, would the height of the shadow on the screen increase, decrease, or stay the same? Explain your reasoning, and support your answer with a clear ray diagram.

Explanation / Answer

it will increase a due to the refraction pphenomenon the rayes will shift towards bottom on the screen and we have less height of shadow...

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