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15. Light Science class 7 in English Medium ncert book solutions Additional Questions
15. Light Additional Questions – Complete NCERT Book Solutions for Class 7 Science (English Medium). Get all chapter explanations, extra questions, solved examples and additional practice questions for 15. Light Additional Questions to help you master concepts and score higher.
15. Light Science class 7 in English Medium ncert book solutions Additional Questions
NCERT Solutions for Class 7 Science play an important role in helping students understand the concepts of the chapter 15. Light clearly. This chapter includes the topic Additional Questions, which is essential from both academic and examination point of view. The solutions provided here are prepared strictly according to the latest NCERT syllabus and follow the guidelines of CBSE to ensure accuracy and relevance. Each question is explained in a simple and student-friendly manner so that learners can grasp the concepts without confusion. These NCERT Solutions are useful for regular study, homework help, and exam preparation. All textbook questions are solved step by step to improve problem-solving skills and conceptual clarity. Students of Class 7 studying Science can use these solutions to revise important topics, understand difficult questions, and practise effectively before examinations. The chapter 15. Light is explained in a structured way, making it easier for students to connect the theory with the topic Additional Questions. By studying these updated NCERT Solutions for Class 7 Science, students can build a strong foundation, boost their confidence, and score better marks in school and board exams.
15. Light
Additional Questions
Additional Questions:
Ques: What is concave mirror?
Ans: If the reflecting surface of a spherical mirror is concave, it is called a concave mirror.
Ques: What is convex mirror?
Ans: If the reflecting surface is convex, then it is a convex mirror.
Ques: What is real image?
Ans: An image formed on a screen is called a real image.
Ques: What is virtual image?
Ans: The image formed by a plane mirror could not be obtained on a screen. Such an image is called a virtual image.
Ques: Which type of mirror can form a real image?
Ans: Concave mirror.
Ques: Which type of lens forms always a virtual image?
Ans: Concave lens.
Ques: Give one use each of a concave and a convex mirror.
Ans:
Use of Concave Mirror-
(i) In Head-lights of Vehicles
Use of Comcave Mirror-
(i) It is used in vehicles as side mirror.
Ques: What is convex lens?
Ans: Those lenses which feel thicker in the middle than at the edges are convex lenses.
Ques: What is concave lens?
Ans: Those which feel thinner in the middle than at the edges are concave lenses.
Ques: Why is convex lens called converging lens?
Ans: A convex lens converges (bends inward) the light generally falling on it. Therefore, it is called a converging lens.
Ques: Why is concave lens called diverging lens?
Ans: A concave lens diverges (bends outward) the light and is called a diverging lens.
Ques: Which lens is used as magnificent lens?
Ans: convex lens.
Ques: What is white light?
Ans: The sunlight consists of seven colours. The sunlight is said to be white light.
Ques: Name all colours presence in rainbow in their real order.
Or
Ques: Name all colours consist in white light.
Ans: red, orange, yellow, green, blue, indigo and violet.
Ques: How many colours are there in white light.
Ans: seven.
Ques: Fill in the blanks:
(i) An image that cannot be obtained on a screen is called _________.
(ii) Image formed by a convex __________ is always virtual and smaller in size.
(iii) An image formed by a __________ mirror is always of the same size as that of the object.
(iv) An image which can be obtained on a screen is called a _________ image.
(v) An image formed by a concave ___________ cannot be obtained on a screen.
Answer:
(i) Vertual image
(ii) miror
(iii) plane
(iv) real
(v) lens
See other sub-topics of this chapter:
1. Chapter Review 2. NCERT Exercise 3. Additional Questions 4. Additional Questions