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Light, Shadows and Reflections — Science STD 6 — Question

CBSE BoardEnglish MediumSTD 6ScienceLight, Shadows and Reflections1 Mark
MCQ
A device containing two plane mirrors which gives us a higher viewer than normal is:
  • A
    Stethoscope
  • B
    Microscope
  • ✓
    Periscope
  • D
    Telescope
✓

Answer

Correct option: C.
Periscope
The periscope is a device which gives us the higher view than normal. By using a periscope, we can see the objects on the other side of a high wall without having to climb over the wall. A soldier sitting in a trench can observe the enemy activities above the ground by using a periscope. Actually, a periscope works on the reflection of light from the two plane mirrors angle two parallel to one another.

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