LIGHT -POST 6


CLASS 8 CHAPTER 16
Light
Day 6


Dear Learners,

In the previous blogs, we  learned about multiple images and uses of plane mirror. Let me help you to recall few important points that we discussed in  the previous blog.

1. Multiple images are the images that are formed when two or more mirrors are placed infront of each other and an object is placed between them. 
2. Multiple images of are formed when an object is placed between two mirrors at an angle(θ)
3. Plane mirror can be used in different ways.

Today, we will be learning about the various applications based on Multiple Images like Kaleidoscope and Periscope.

Happy Learning!😊

At the end of it, you will be able to:
1. explain the applications based on multiple image.
2. tell the working of Kaleidoscope and Periscope.
3. tell the uses of Periscope.

APPLICATIONS BASED ON MULTIPLE IMAGES


1. KALEIDOSCOPE: 


Construction of Kaleidoscope: https://www.youtube.com/watch?v=bfv0EPxMpkU


Working of Kaleidoscope: https://www.youtube.com/watch?v=IgzOks88c4U

Kaleidoscope is based on the principle of formation of multiple images by inclined mirrors.


2. PERISCOPE: 


Construction of Periscope: https://www.youtube.com/watch?v=vaDOGKdRMzg


Working of Periscope: https://www.youtube.com/watch?v=prxP0rNmaSA




Uses of Periscope:
 It is device which is used for seeing objects which are not in direct line of sight such as ships on the surface of water from submarine. It is based on the principle of reflection by plane mirror.

Periscope is based on the principle of reflection of light. 

Home Assignment

Arjun planned an activity to observe an object A through pipes as shown in the the figure, so that he could see objects which he could not directly see.

(a) How many mirror should he use to see the object?
(b) Indicate the positions of the mirror in the figure.
(c) Indicate the direction of rays in the figure.

(d) If any of the mirror is removed will he able to see the object?





Comments

  1. Abhay Singh UpmanyuMay 2, 2020 at 7:36 AM

    Good morning ma'am I am ABHAYSINGH UPAMNYU of 8D

    ReplyDelete
  2. Achyut TripathiMay 2, 2020 at 7:55 AM

    Good morning Ma'am I am Achyut Tripathi of class 8 D

    ReplyDelete
  3. Vishnu VardhanMay 2, 2020 at 8:16 AM

    Good morning mam I am vishnu Vardhan

    ReplyDelete
  4. Achyut TripathiMay 2, 2020 at 8:18 AM

    (a) He should use 3 mirrors
    (b) He should put them at the three turns
    (d) No

    ReplyDelete
  5. JoelMay 2, 2020 at 8:19 AM

    Good morning ma'am I am Tumeti Sushaun Joel of class 8D

    ReplyDelete
  6. Varun negiMay 2, 2020 at 8:37 AM

    Good morning Ma'am I am Varun negi

    ReplyDelete
  7. AnasMay 2, 2020 at 8:44 AM

    Good morning mam I am Anas

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  8. Arpit Jonathan PillayMay 2, 2020 at 8:52 AM

    Good morning Maam I am ARPIT JONATHAN PILLAY

    ReplyDelete
  9. Ashaan Anurag lallMay 2, 2020 at 9:01 AM

    Good morning ma'am I'm Ashaan Anurag lall of 8 D

    ReplyDelete
  10. Gurdev SinghMay 2, 2020 at 9:05 AM

    This comment has been removed by the author.

    ReplyDelete
  11. Gurdev SinghMay 2, 2020 at 9:06 AM

    Good morning ma'am, I am Gurdev Singh Class 8-D

    ReplyDelete
  12. Ronald Jo JosephMay 2, 2020 at 9:12 AM

    Good morning ma'am. I am Ronald Jo Joseph

    ReplyDelete
  13. ROHANMay 2, 2020 at 9:13 AM

    Good morning ma'am I am Rohan Bisht

    ReplyDelete
  14. ROHANMay 2, 2020 at 9:15 AM

    Maam
    a.3
    b.at each corners in 3 turns
    d.no.

    ReplyDelete
  15. Riddhesh S. LodhiMay 2, 2020 at 9:20 AM

    Good morning ma'am I am Riddhesh S. Lodhi of class 8th D

    ReplyDelete
  16. AnonymousMay 2, 2020 at 9:21 AM

    Good morning mam I am kartik of class 8-D

    ReplyDelete
  17. Maanvik SoodMay 2, 2020 at 9:26 AM

    good morning ma'am this is maanvik sood

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  18. Simon josephMay 2, 2020 at 9:34 AM

    Good morning mam I am simon joseph

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  19. Akshat RauthanMay 2, 2020 at 9:40 AM

    Good morning ma'am I'm akshat Rauthan

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  20. Mohit KumarMay 2, 2020 at 9:41 AM

    Good morning mam. I am Mohit Kumar.

    ReplyDelete
  21. Utkrisht suraliyaMay 2, 2020 at 9:42 AM

    Gm mam I'm utkrisht Suraliya 8d

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  22. Ojas punjMay 2, 2020 at 9:43 AM

    Good Morning Ma'am I'm Ojas Punj, 8 D

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  23. PreetikaMay 2, 2020 at 9:44 AM

    good morning boys

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  24. Abhishek SharmaMay 2, 2020 at 9:45 AM

    Good morning ma'am I am abhishek sharma

    ReplyDelete
  25. Shaun DsouzaMay 2, 2020 at 9:47 AM

    Good morning , my name is Shaun Dsouza

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  26. Akash DcostaMay 2, 2020 at 9:49 AM

    Good morning mam I am Akash Dcosta

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  27. unknownMay 2, 2020 at 9:51 AM

    I am Hitesh Vijay Nitnaware

    ReplyDelete
  28. DeependraMay 2, 2020 at 9:53 AM

    Good morning mam. This is DEEPENDRA KUMAR SINGH. 8-D

    ReplyDelete
  29. PrabhgunMay 2, 2020 at 9:54 AM

    good morning I am Prabhgun

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  30. AnonymousMay 2, 2020 at 9:54 AM

    Good morning mam I am Isaac Visscher class 8D

    ReplyDelete
  31. Aron m haokipMay 2, 2020 at 9:55 AM

    Good morning ma'am iam Aron haokip

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  32. JonathanMay 2, 2020 at 10:15 AM

    Good morning ma'm. I'm Jonathan

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  33. Daksh martinMay 2, 2020 at 10:20 AM

    Good morning mam im Daksh martin

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  34. UnknownMay 2, 2020 at 10:30 AM

    Good morning maam I am Shaurya khatri

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  35. UnknownMay 2, 2020 at 10:37 AM

    Good morning ma'am I am Alan Richard

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  36. Vedant kumarMay 2, 2020 at 10:40 AM

    Good morning ma'am I am Vedant kumar

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  37. AmaanMay 2, 2020 at 11:06 AM

    Good morning ma'am I am Amaan Richard of class 8D

    ReplyDelete
  38. Sahil JosephMay 2, 2020 at 11:59 AM

    Good morning mam....
    I am aarush of class 8D

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  39. Maneet GunawatMay 2, 2020 at 12:24 PM

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