Standard Science Primary 4 Energy

Stan placed an opaque object between a torch and a screen. What will happen to the size of the shadow on the screen if he moves the torch further away from the object?

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

Worked Solution

Step 1: Identify the relationship between distance and shadow size. Step [2-9]: When the distance between the light source and the object increases, the object blocks a smaller angle of light. Step [2-9]: Therefore, the shadow on the screen becomes smaller.

Correct answer: The shadow becomes smaller.

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