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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: Why is this suggested that we should not look directly toward the sun or its image?
Ans: Never look directly towards the sun or its image as it may damage your eyes. You may look at the image of the sun when it is thrown on a screen or a wall.
Ques: Why are convex mirror used mainly in vehicles as side mirror?
Ans: Convex mirrors can form images of objects spread over a large area. So, these help the drivers to see the traffic behind them.
Ques: Write three uses of concave mirrors?
Ans: Uses of concave mirrors.
(i) it is used by ENT doctors to see the ears, nose and throat and reflect the light.
(ii) The dentist uses it to get enlarge image of teeth.
(iii) The reflectors of torches, headlights of cars and scooters are concave in shape.
Ques: Write the differences between convex and concave lens.
Ans: The differences between convex and concave lens.
convex lens:
(i) It feels thicker in the middle than at the edges.
(ii) A convex lens converges (bends inward) the light.
(iii) It forms real and inverted images.
concave lens:
(i) It feels thinner in the middle than at the edges.
(ii) A concave lens diverges (bends outward) the light.
(iii) It forms virtual and erect images.
Ques: Why is word “AMBULANCE” written strangely on Ambulance?
Ans: When the driver of a vehicle ahead of an ambulance looks in
her/his rear view mirror, s/he can read ‘AMBULANCE’ written on it and give way to it.
Ques: What is Newton’s Disk?
Ans: When seven colours of rainbow pasting on the disk in their order rotates in daylight it seems white. Such disk is generally known as Newton’s disk.
See other sub-topics of this chapter:
1. Chapter Review 2. NCERT Exercise 3. Additional Questions 4. Additional Questions