Light Blog 6




CLASS 8 CHAPTER 16
Light
Day 6


Dear Learners,

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

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.

Important Instruction to note:

 There will Google Assessment Sheet in next blog i.e blog 7. You all need to prepare well for Force and Pressure.

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.

Before, we start the chapter you all should read page no 255, 256 of your text book. By doing this, it will be easier for you all understand the topic well.

So, lets start the topic.........

 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. I hope you all have enjoyed the above topic and also understood the concept well.

 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. Aditya SinghMay 2, 2020 at 7:19 AM

    good morning sir I"m ADITYA SINGH
    ROLL NO.36

    ReplyDelete
  2. AVI SURANAMay 2, 2020 at 7:26 AM

    Good Morning Sir I am Avi Surana

    ReplyDelete
  3. Maulik JainMay 2, 2020 at 7:30 AM

    Good Morning Ma'am,
    I Am Maulik Jain

    ReplyDelete
  4. Dakshesh PilaniaMay 2, 2020 at 7:30 AM

    good morning sir
    I am Dakshesh

    ReplyDelete
  5. Aditya SagarMay 2, 2020 at 7:32 AM

    Good morning sir I am Aditya sagar 8E roll no 30

    ReplyDelete
  6. ChristoMay 2, 2020 at 7:33 AM

    Good morning sir I am Christo Sakariyas

    ReplyDelete
  7. Aman ShekharMay 2, 2020 at 7:34 AM

    Good morning sir I am Aman Shekhar

    ReplyDelete
  8. Pall anandMay 2, 2020 at 7:34 AM

    Good morning sir I am Pall Anand
    8E
    Roll No.6

    ReplyDelete
  9. N.RakaloMay 2, 2020 at 7:36 AM

    Good morning sir. I am N.Rakalo

    ReplyDelete
  10. Anirudh TrivediMay 2, 2020 at 7:37 AM

    Good morning sir,
    I am Anirudh trivedi

    ReplyDelete
  11. Aditya LalMay 2, 2020 at 7:38 AM

    Good morning sir. I am Nishant Lal

    ReplyDelete
  12. Anirudh TrivediMay 2, 2020 at 7:38 AM

    Good morning Sir,
    I am Anirudh Trivedi

    ReplyDelete
  13. Rudra sethiMay 2, 2020 at 7:38 AM

    good morning sir I am rudra sethi

    ReplyDelete
  14. Chetan chandelMay 2, 2020 at 7:38 AM

    Good morning sir ,
    I am Lakshay Chandel

    ReplyDelete
  15. Shaun steniMay 2, 2020 at 7:38 AM

    Good morning My name is Shaun Steni 8 E roll no 44

    ReplyDelete
  16. AmitMay 2, 2020 at 7:41 AM

    Good morning sir,I'm Amit.

    ReplyDelete
  17. AnonymousMay 2, 2020 at 7:43 AM

    Good morning sir I am chirag
    8E roll no.1

    ReplyDelete
  18. Alan RoyMay 2, 2020 at 7:46 AM

    Good morning sir I am Alan Roy roll no 28

    ReplyDelete
  19. Taksh SinghalMay 2, 2020 at 7:46 AM

    Good morning sir. I am Taksh Singhal

    ReplyDelete
  20. Aryan PuriMay 2, 2020 at 7:50 AM

    Good Morning Sir,
    Aryan Puri here!

    ReplyDelete
  21. Cyril MartinMay 2, 2020 at 7:53 AM

    GM Sir
    Cyril Martin- Roll No. 20

    ReplyDelete
  22. Aaryan SainiMay 2, 2020 at 8:00 AM

    Sir, sorry for commenting late
    I am Aaryan Saini
    Roll no. 31

    ReplyDelete
  23. NavyeMay 2, 2020 at 8:04 AM

    Good Morning sir
    I am Navye Malhotra

    ReplyDelete
  24. Lovely SinghMay 2, 2020 at 8:05 AM

    Good morning sir I am
    Pranav Singh roll no 37

    ReplyDelete
  25. Evaan DayalMay 2, 2020 at 8:13 AM

    Good morning sir I am Evaan Dayal of 8E

    ReplyDelete
  26. ShreyanshMay 2, 2020 at 8:16 AM

    Good morning sir. I am Shreyansh Agarwal.

    ReplyDelete
  27. RemMay 2, 2020 at 8:21 AM

    Good morning sir.
    Remthanglien Aomar Varte .

    ReplyDelete
  28. Aditya AggarwalMay 2, 2020 at 8:23 AM

    Good Morning sir
    I am Tanish Aggarwal
    8-E

    ReplyDelete
  29. Evaan DayalMay 2, 2020 at 8:27 AM

    This comment has been removed by the author.

    ReplyDelete
  30. AnonymousMay 2, 2020 at 8:36 AM

    good morning sir
    Arnav daga here

    ReplyDelete
  31. Seerat pal singhMay 2, 2020 at 8:44 AM

    Good morning ma'am I am seerat pal singh 8E

    ReplyDelete
  32. Cyril MartinMay 2, 2020 at 10:14 AM

    This comment has been removed by the author.

    ReplyDelete
  33. Justin RussellMay 2, 2020 at 11:30 AM

    Good Morning Sir, I am Justin Russell.

    ReplyDelete
  34. Naman KalraMay 2, 2020 at 2:53 PM

    Good Morning sir, I am Naman kalra

    ReplyDelete
  35. ChristopherMay 2, 2020 at 4:03 PM

    Good morning sir I am Christopher amsan

    ReplyDelete
  36. gangeshmmsMay 2, 2020 at 4:43 PM

    Good morning sir, I am Gangesh

    ReplyDelete
  37. Ayush jainMay 2, 2020 at 6:02 PM

    Good evening ma'am I am Ayush Jain

    ReplyDelete
  38. Vedant KumarMay 3, 2020 at 9:54 PM

    Good Morning Sir,

    I am Vedant Kumar

    ReplyDelete
  39. Ayush jainMay 5, 2020 at 4:47 PM













































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