Standard Science Primary 4 Energy

A torch is shone on a metal cube. What happens to the size of the shadow if the cube is moved closer to the torch?

A The shadow disappears.
B The shadow becomes smaller.
C The shadow becomes larger.
D The shadow remains the same size.
Show Worked Solution

Worked Solution

Step 1: Light travels in straight lines. Step [2-9]: Moving the object closer to the source blocks a larger angle of light rays. Step [2-9]: This results in a larger area on the screen being blocked, making the shadow larger.

Correct answer: The shadow becomes larger.

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