NCERT - 7 - Science :: Light
Go To: NCERT-Science-Grade 7
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[Contributor- Anu Nived]
Objective: To teach the students about light and how it travels
Subtopics to be covered:
- Reflection of light
- Concave and Convex lens
- How rainbow is formed
Learning Outcome:
- Students know that sunlight is a mix of different colours
- They know about the images formed by concave and convex lenses
[Contributor - Kripa S]
http://epathshala.nic.in/wp-content/doc/book/flipbook/Class%20VII/0759-Vigyan/Chapter%2015/index.html (NCERT Hindi Medium)
http://epathshala.nic.in/wp-content/doc/book/flipbook/Class%20VII/0758-Science/Chapter%2015/index.html (NCERT English Medium)
https://drive.google.com/open?id=0BzNF2YyqQxJ-NUFFUXJ1ZXdkZ2c (JEPC Board) (Hindi Medium) Part 1
https://drive.google.com/open?id=0BzNF2YyqQxJ-VnRJSUl4S29xa0E (JEPC Board) (Hindi Medium) Part 2
[Contributor- Kripa S]
(Source - ExamBlock)
https://www.youtube.com/watch?v=qfvHMyTXJF4 (Hindi - Basics of Light)
(Source - Bodhaguru)
https://www.youtube.com/watch?v=rCznJTP3cVQ (Hindi - Light and shadows)
https://www.youtube.com/watch?v=Jo1UZgGTtUs (Hindi - Properties of light)
[Contributor- Anu Nived]
https://www.sciencelearn.org.nz/system/images/images/000/000/046/full/Lake-reflection20150805-30600-1t8rqoj.jpg?1447040426 (reflection of light)
http://maggiesscienceconnection.weebly.com/uploads/5/1/0/5/5105330/__524973087.jpg (convex, plane and concave mirror)
http://www.ekshiksha.org.in/images_light_VII/figure_18.JPG (torch reflector)
https://3.imimg.com/data3/OB/HP/MY-2271920/newton-s-colour-disc-500x500.jpg (newton's color disc)
[Contributors - Arshea Bimal, Kripa S]
1. https://www.youtube.com/watch?v=qjZFJ88sEhE (Tracing path of light)
2. Take a stainless steel spoon. Bring the outer side of the spoon near your face and look into it. Do you see your image in it? Is this image different from what you see in a plane mirror? Is this image erect? Is the size of the image the same, smaller or larger?
3. https://www.youtube.com/watch?v=HSbMMdoGIW4 (rainbow)
[Contributor - Sagar Prithvi]
https://drive.google.com/open?id=0BzNF2YyqQxJ-Wlhtd3lzc3M5RU0
| Term' | 'Transliterated Term' | 'Translated Term' |
| Concave lens | कॉन्केव लेंस | अवतल लेंस |
| Concave mirror | कॉन्केव मिरर | अवतल दर्पण |
| Convex lens | कॉन्वेक्स लेंस | उत्तल लेंस |
| Convex mirror | कॉन्वेक्स मिरर | उत्तल दर्पण |
| Erect image | एरेक्ट इमेज | सीधा प्रतिबिंब |
| Magnified image | मैग्नीफाइड इमेज | आवर्धित छवि/प्रतिबिंब |
| Magnifying glass | मैग्नीफाइंग ग्लास | आवर्धक लेंस |
| Prism | प्रिज़्म | सम पार्श्व, एक त्रिकोणीय आकार वाले पारदर्शी ऑप्टिकल डिवाइस |
| Rainbow | रेनबो | इंद्रधनुष |
| Real image | रियल इमेज | वास्तविक प्रतिबिंब , वास्तविक छवि |
| Rear view mirror | रियर व्यू मिरर | पश्च दृश्य दर्पण |
| Converge | कॉन्वर्ज | अभिसरित |
| Spherical mirror | स्फेरिकल मिरर | गोलीय दर्पण |
| Virtual image | विर्चुअल इमेज | आभासी प्रतिबिंब |
| Diverge | डाइवर्ज | अपसरित |
[Contributor- Sagar Prithvi]
https://drive.google.com/open?id=0BzNF2YyqQxJ-Rm1EV21XNU5TLU0
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