Standard Science Primary 4 Energy

Which of the following conditions is necessary for us to see an object?

A The object must be transparent.
B The object must be in a completely dark room.
C The object must be a light source.
D There must be light to reflect off the object.
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Worked Solution

Step 1: We see things when light enters our eyes. Step 2: Light can come directly from a source or reflect off an object. Step 3: Therefore, light must be present to reflect off the object.

Correct answer: There must be light to reflect off the object.

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