Explain how a periscope can help to see a tree behind a wall, which cannot be seen directly.
Asked by Topperlearning User
| 15th May, 2015,
06:48: AM
Expert Answer:
The figure shows a tree behind a high wall which we canno see direclt. We can, however, see this treee by using a periscope as follows:The upper hole of periscope is turned towards the object to be seen (here a tree) so that mirror M1 faces the object. And we look into the periscope from the bottom hole in front of lower mirror M2. The light rays coming from the tree fall on the plane mirror M1. Mirror M1 reflects these rays of light towards the mirror M2. The mirror M2 then reflects the light towards the eye of the person looking into periscope through the lower hole. Since the light rays coming from the tree enter the eye, it is possible to see the image of the tree in the lower mirror M2 (even though the tree cannot be seen directly).
Answered by
| 15th May, 2015,
08:48: AM
Concept Videos
- why do we call sun ray
- what is a reflection
- Light
- what is the role of reflector in torch?
- Light can't _ around object
- Define reflection.
- Why are plane mirrors used for self grooming?
- Why we cannot see our image in a white paper?
- On the road, you regularly see mirrors being used. Can you give any one such example?
- Can you give an example of light reflected from a transparent media?
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change