Read and download NCERT Class 7 Science Light in NCERT book for Class 7 Science. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Science textbook for Class 7 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 7 Science to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 7 Science Chapter 15 Light
Class 7 Science students should refer to the following NCERT Book Chapter 15 Light in Class 7. This NCERT Book for Class 7 Science will be very useful for exams and help you to score good marks
Chapter 15 Light NCERT Book Class 7
15 Light
You might have seen a beam of sunlight when it enters a room through a narrow opening or a hole. You may have also seen beams of light from the headlamps of scooters, cars and engines of trains [Fig. 15.1 (a)]. Similarly, a beam of light can be seen from a torch. Some of you may have seen a beam of searchlight from a light house or from an airport tower [Fig. 15.1 (b)].
What do these experiences suggest?
15.1 LIGHT TRAVELS ALONG A STRAIGHT LINE
Boojho recalls an activity he performed in Class VI. In that activity he looked at a lighted candle first through a straight pipe and then through a bent pipe (Fig. 15.2). Why was Boojho not able to see the candle flame through a bent pipe? This activity showed that light travels along straight lines. How can we change the path of light? Do you know, what happens when light falls on a polished or a shiny surface?
15.2 REFLECTION OF LIGHT
One way to change the direction of light is to let it fall on a shiny surface. For example, a shining stainless steel plate or a shining steel spoon can change the direction of light. The surface of water can also act like a mirror and change the path of light. Have you ever seen the reflection of trees or buildings in water Any polished or a shiny surface can act as a mirror. What happens when light falls on a mirror? You have learnt in Class VI that a mirror changes the direction of light that falls on it. This change of direction by a mirror is called reflection of light. Can you recall the activity in which you got the light of a torch reflected from a mirror? Let us perform a similar activity.
Exercises
1. Fill in the blanks:
(a) An image that cannot be obtained on a screen is called ____________.
(b) Image formed by a convex __________ is always virtual and smaller in size.
(c) An image formed by a __________ mirror is always of the same size as that of the object.
(d) An image which can be obtained on a screen is called a _________ image.
(e) An image formed by a concave ___________ cannot be obtained on a screen.
2. Mark ‘T’ if the statement is true and ‘F’ if it is false:
(a) We can obtain an enlarged and erect image by a convex mirror. (T/F)
(b) A concave lens always form a virtual image. (T/F)
(c) We can obtain a real, enlarged and inverted image by a concave mirror. (T/F)
(d) A real image cannot be obtained on a screen. (T/F)
(e) A concave mirror always form a real image. (T/F)
3. State the characteristics of the image formed by a plane mirror.
4. Find out the letters of English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings.
5. What is a virtual image? Give one situation where a virtual image is formed.
6. State two differences between a convex and a concave lens.
7. Give one use each of a concave and a convex mirror.
8. Which type of mirror can form a real image?
9. Which type of lens forms always a virtual image?
Please refer to attached file for NCERT Class 7 Science Light
NCERT Class 7 Science Nutrition in Plants |
NCERT Class 7 Science Nutrition in Animals |
NCERT Class 7 Science Fibre to Fabric |
NCERT Class 7 Science Heat |
NCERT Class 7 Science Acids Bases and Salts |
NCERT Class 7 Science Physical and Chemical Changes |
NCERT Class 7 Science Weather Climate and Adaptation |
NCERT Class 7 Science Winds Storms and Cyclones |
NCERT Class 7 Science Soil |
NCERT Class 7 Science Respiration in Organisms |
NCERT Class 7 Science Transportation in Animals |
NCERT Class 7 Science Reproduction in Plants |
NCERT Class 7 Science Motion and Time |
NCERT Class 7 Science Electric Current and its Effects |
NCERT Class 7 Science Light |
NCERT Class 7 Science Water A Precious Resource |
NCERT Class 7 Science Forests Our Lifeline |
NCERT Class 7 Science Wastewater Story |
Science NCERT Book Class 7 Chapter 15 Light
The above NCERT Books for Class 7 Science Chapter 15 Light have been published by NCERT for latest academic session. The textbook by NCERT for Chapter 15 Light Science Class 7 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Chapter 15 Light NCERT etextbooks as the exams for Class 7 Science are always asked as per the syllabus defined in these ebooks. These Class 7 Chapter 15 Light book for Science also includes collection of question. We have also provided NCERT solutions for Class 7 Science which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 7 students.
NCERT Book Class 7 Science Chapter 15 Light
The latest NCERT book for Chapter 15 Light pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 7 Science Chapter 15 Light are designed to enhance the overall understanding of students. All Class 7 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 7 students.
Chapter 15 Light NCERT Book Class 7 Science
As the students of Class 7 need the books for their regular studies, we have provided all NCERT book for Chapter 15 Light in pdf here for free download. All pdf NCERT books available here for Class 7 will help them to read on their mobile or computers. They can take a print of the Class 7 Science NCERT Book Chapter 15 Light pdf easily and use them for studies. The NCERT textbooks for Class 7 Science have been provided chapter-wise and can be downloaded for free of cost.
Class 7 Science Chapter 15 Light NCERT Book
Along with Science Class 7 NCERT Book in Pdf for Chapter 15 Light we have provided all NCERT Books in English Medium for Class 7 which will be really helpful for students who have opted for english language as a medium. Class 7 students will need their books in English so we have provided them here for all subjects in Class 7.
Class 7 Chapter 15 Light NCERT Book Science
For Class 7 Chapter 15 Light we have provided books for students who have opted for Hindi and Urdu medium too. You can click on the links provided above to download all Hindi medium Class 7 Science Chapter 15 Light book in easy to read pdf format. These books will help Class 7 Science students to understand all topics and also strictly follow latest syllabus for their studies. If you are looking to download the pdf version of Class 7 Science Chapter 15 Light textbook issued by NCERT then you have come to the correct website
You can download the NCERT Book for Class 7 Science Chapter 15 Light for latest session from StudiesToday.com
Yes, you can click on the link above and download chapter wise NCERT Books in PDFs for Class 7 for Science Chapter 15 Light
Yes, the NCERT Book issued for Class 7 Science Chapter 15 Light have been made available here for latest academic session
You can easily access the link above and download the Class 7 NCERT Books Science Chapter 15 Light for each chapter
There is no charge for the NCERT Book for Class 7 Science Chapter 15 Light you can download everything free
Regular revision of NCERT Books given on studiestoday for Class 7 subject Science Chapter 15 Light can help you to score better marks in exams