Toppers Study Toppers Study Toppers StudyGet complete NCERT Solutions for 7 Science 15. Light with detailed explanations. Easy-to-understand answers to help students study effectively and score better.
Get complete NCERT Solutions for 7 Science 15. Light with detailed explanations. Easy-to-understand answers to help students study effectively and score better.
Preparing for exams becomes easier with Additional Questions. Whether you are studying for board exams or mid-term exams, 7 Science Chapter 15. Light solutions provide quick revising points, well-structured answers, and additional practice material to help you score better.
ncert_solutionsAdditional 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
Additional Questions are created by experts to give step-by-step explanations. Around 60–70% of exam questions are based on NCERT concepts. Our 7 Science Chapter 15. Light solutions help you understand the core concepts and practice effectively.
Revision is the key to exam success. Our notes for 7 Science highlight important formulas, key definitions, and exam-ready points from Chapter 15. Light. These quick revision notes make last-minute preparation easy.
Every NCERT chapter ends with exercises, and solving them is crucial. Our Additional Questions include complete solutions for 7 Science Chapter 15. Light exercises. With step-by-step answers, you gain clarity and confidence to attempt similar exam questions.
To boost your preparation, we also provide additional important questions with answers. These are prepared from previous year board papers, sample papers, and important concepts of Chapter 15. Light. Practicing these ensures you are well-prepared for both board and mid-term exams.
Our Additional Questions are useful for both board exams and mid-term exams. For 7 Science, we provide notes, exercises, and important Q&A so that you can revise smartly and write perfect answers in exams.
In short, Additional Questions for 7 Science Chapter 15. Light are a complete study package. With quick revising points, NCERT exercises, and additional important questions, you can prepare effectively for exams. Make these solutions your study companion and excel in your academic journey.
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