Question

an opaque object does this to light and causes a shadow to from

Answer 1

Yes an opaque object forms shadow as it stops the passage of light to pass through it so it forms a dark patch on the screen or the object behind it which is known as shadow.
When the point source of light is smaller than the object a dark shadow is formed due to umbra grows larger.
When the point source of light is larger than the object the shadow formed is faint due to penumbra grows larger.
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Answer 2

Answer:Block

Explanation: