PDF chapter test TRY NOW
Magic Device:
Let us make a device called a periscope, that uses reflections to see around corners!
- Ask one of your freinds to stand in the corridor just out side the entrance to the classroom with a mirror in hand.
- Ask another friend also holding a mirror, to stand in the middle of classroom in front of the entrance.
- Now ask your friends to ajust their mirrors in such a way that the image of object on the other side of the corridor becomes visible to you while you are standing inside the class.
![YCIND_220927_4495_9.png](https://resources.cdn.yaclass.in/25e7cd68-6b9f-4982-a0e8-0e23023bb1d1/YCIND22092744959w500.png)
A boy and a girl holding a mirror
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4. You can make a simple periscope by placing two mirrors in a ‘\(Z\)’ shaped box as shown in figure.
![YCIND_220927_4495_10.png](https://resources.cdn.yaclass.in/53954039-1c41-4919-9c3c-a17283955f32/YCIND220927449510w500.png)
A periscope
Important!
This is a activity-based exercise. Write the answer in a sheet and compare it with the solution given below.