HOTS Science Primary 4 Energy

In a periscope using two mirrors, how many times is the light reflected before it reaches the observer's eye?

A Two times
B One time
C Three times
D It is not reflected, it is refracted.
Show Worked Solution

Worked Solution

Step 1: Light from the object hits the first mirror at the top. Step [2-9]: It reflects down to the second mirror at the bottom. Step [2-9]: The second mirror reflects it into the eye. Total = 2 reflections.

Correct answer: Two times

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free