Result:
1/10
1. How many images will be formed when two mirrors are placed at a 120-degree angle?
2
3
4
1
2/10
2. How many images will be formed when two mirrors are placed parallel to each other?
10
100
Infinite
Zero
3/10
3. Which instrument is used to test the laws of reflection?
Scale
Compass
Board with attached Protractor
Thermometer
4/10
4. Which device provides wonderful views through multiple reflection?
Microscope
Kaleidoscope
Periscope
Telescope
5/10
5. How many mirror pieces are usually used in a kaleidoscope?
2
3
4
5
6/10
6. Which device helps to see hidden objects?
Kaleidoscope
Periscope
Stethoscope
Binoculars
7/10
7. At what angle are the mirrors fixed in a periscope?
90 degrees
60 degrees
45 degrees
30 degrees
8/10
8. On which phenomenon is the working of a periscope based?
Refraction
Multiple Reflection
Light Scattering
Lateral Inversion
9/10
9. Why can we see clear reflections of mountains and trees in water bodies?
Diffused Reflection
Color of water
Regular Reflection on the surface
Speed of light
10/10
10. Why is the reflection not clear when waves form in clear water?
Because reflection becomes like on a rough surface (Diffused Reflection)
Because water disappears
Because light is absorbed
Because water is not transparent