class 7 science chapter 15 light extra questions
Light - Chapter Wise CBSE Solved Question and Answer Based On NCERT. Answer: A virtual image is larger than the object can be produced by a convex mirror. (c) Concave mirror and convex lens On identifying the letters of newspaper, we can differentiate the two types of lenses. Question 1. 10. NCERT Exemplar Class 7 Science is very important resource for students preparing for VII Board Examination. MCQ Questions for Class 6 Science with Answers were prepared based on the latest exam pattern. The image of distant tree will be at focus in case of concave mirror. (b) Only plane mirror Yes, when a ray of light is incident on the mirror surface, then the mirror changes the direction of light. (c) both concave mirror and convex lens, Question 11. Answer: Answer: Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 7.. Image formed by a convex _____ is always virtual and smaller in size. Question 1. Answer: Since, the extent of reflection depends upon the shine and smoothness of the surface. Concave and convex mirrors are the parts of sphere whose one side is polished or silvered. (a) Only concave mirror, Question 10. An image that cannot be obtained on a screen is called _____. Briefly state the characteristics of image formed by a plane mirror. Even if the screen is placed in front of the plane mirror, then the image of candle cannot be formed on the screen. What is the nature of this lens? Answer: A convex lens always produces a real image. Below students will find the description of all the chapters of CBSE class 7 science subject. (c) Only convex mirror Answer: Name the phenomenon that is involved in the formation of image of an object by a convex lens. The outer shining surface of a round bottom steel bowl acts as a ………………….. mirror. (a) The image which can be formed on the screen is real image. 8. Question … The image formed in a plane mirror is behind the mirror. What is the nature of lenses A and B ? Our notes of Chapter 15 Light are prepared by Maths experts in an easy to remember format, covering all syllabus of CBSE, KVPY, NTSE, Olympiads, NCERT & other Competitive Exams. 5. Register online for Science tuition on Vedantu.com to … (b) Concave lens and convex mirror (b) concave lens provided the image is smaller than object. (c)-(iv) Here you get easy solutions of Lakhmir Singh and Manjit Kaur Science solution Chapter 15. [NCERT Exemplar] Which of the following always diverge light rays? NCERT Solutions to help you to revise complete syllabus and score more marks in your examinations. A concave mirror is also known as a converging mirror. (a) only a convex mirror Both of them were feeling so much hungry and they sat ideally on their respective chairs and having empty plates and spoons on their dinning table. which is thicker in the middle than at the edges is called a convex lens. [NCERT Exemplar] Question 24. Differentiate between a plane mirror, concave mirror and a convex mirror without touching them. 4. reflection (a) Convex mirror is a mirror which is used as a rearview mirror. Digital NCERT Books Class 7 Science pdf are always handy to use when you do not have access to physical copy. Answer: So, it means that the object is also 6m away from the mirror. (b) only a concave mirror After sometimes, he got scolded by his lab teacher for not performing the experiment. Chapter 1: Nutrition in Plants. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. How will you identify them without touching? 1800-212-7858 / 9372462318. The band of seven colours formed on a white screen, when a beam of white light is passed through a glass prism, is known as spectrum of white light. Answer: (b) 1 m Lakhmir Singh and Manjit Kaur Science solution: Light Chapter 15. Light Class 7 MCQs Questions with Answers. Answer: Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Science for Class 7 so that you can refer them as and when required. Question 22. Identify the nature of the lens. If the distance between object and lens is less than the focus of the lens, then it forms a virtual image and this image cannot be obtained on a screen but formed on the same side of the object. If one half of a convex lens is covered with a black paper, then yes, the convex lens will produce the complete image of the object. In a convex spherical mirror, reflection of light takes place at a bent in surface. Boojho and Paheli were given one mirror each by their teacher. (c) only a plane mirror [NCERT Exemplar; HOTS] An object can be seen only if it emits light. Observe the given figures carefully. Boojho and Paheli were given one mirror each by their teacher. The path of the light is (a) always a straight line So, this process of change in the sides of the object as well as of image is known as lateral inversion. It is only when the light from an object enters our eyes that we see it. Mention the type of image formed on a cinema screen. Newton found that if a beam of white light is passed through a glass prism, then the white light splits to form a band of seven colours on a white screen . Answer: Question 2. Convex lens is a lens which can converge the sun’s rays to a point and burn a hole in the piece of paper. Answer: (a) can be formed on the screen Question 7. Question 6. State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B shown in the figure. Answer: False, a concave lens can be used to produce an erect and diminished (smaller than the object image). 15.4: Playing with spherical mirrors: 15.5: Images formed by lenses: 15.6: Sunlight — white or coloured? While sitting in the practical lab instead of performing experiment, Ramesh was playing with his meter scale. It is used to get a wide view of traffic behind. Answer: A prism splits light into ………………….. colours. So, in ambulance there is emergency for patients to reach hospital and by viewing in rear mirror, it can be easily identified of a vehicle and everyone give him a way. (d) is formed only by the convex mirror (b) only a concave mirror, Question 9. This means that the mirrors of Boojho and Paheli respectively are [NCERT Exemplar] 1. two Answer: We can mix these colours to get white light. Answer: (a) concave mirror or convex mirror 2. Last Sunday Girish’s mother, Priyanka was preparing the dinner in her kitchen for Girish and his father. An image formed by a lens is erect. Multiple Choice Questions A virtual image Science (www.olympiadsuccess.com) Chapter 15: Light Class: VII . Now, rotate the disc quickly in day light. But seven colours of bands are only observed, when a white light is passed through a prism and dispersion takes place. Explain how this could be possible. 6. thicker, thinner Register online for Science tuition on Vedantu.com to score more marks in your examination. The change in the direction of light by a mirror is called ………………….. of light. Question 1. So, this is a reason why we require a shiny surface for reflection. Check the below NCERT MCQ Questions for Class 8 Science Chapter 16 Light with Answers Pdf free download. You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. Question 20. We need a shiny surface for reflection. It can be either larger or smaller depending on the distance of the object to the mirror. Here is the list of Extra Questions for Class 7 Science with Answers based on latest NCERT syllabus prescribed by CBSE. Draw a diagram to show the dispersion of white light by a glass prism. In the formation of a rainbow, what acts as tiny prisms? (a) plane mirror and concave mirror (d) Both concave and convex mirrors Briefly tell that how many reflected rays can be obtained from a single incident ray in respect of a plane mirror. Such an image is called an erect image (or upright image). Science - Class 7 /Grade 7 (Chapter 11-18) Chapter 15 – Light - 3 NCERT Solutions for Class 7 Science PDF free download, NCERT Solutions for Class 7 Science Chapter 15 Light, to … (c) 0.5 m (a) which can be formed on the screen. (b) The distance between object and mirror is given by 0.5 + 0.5= 1 m. Question 5. (b) when the sun is behind you Question 1. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. NCERT Solutions for Class 7 Science Chapter 15 Light in English Medium or अध्याय 15 प्रकाश in Hindi Medium free to download in PDF file format or View online free updated for new academic session 2020-2021. [NCERT Exemplar] In this lesson, students will learn about nutrients, mode of nutrition in plants, photosynthesis process, other modes of nutrition in plants, how nutrients are replenished in the soil. So, state whether it is real or virtual image. The distance between the person and his image = PO’+ PI’= 4 + 4 = 8m. False, a concave mirror always forms an erect, virtual and enlarged (larger than the object) image. (b) green (Value Based Question] NCERT Solutions Class 7 Science Chapter 15 Light. Is the object moving in a direction towards the lens or away from it? So, now we can say that the sunlight consists of seven colours. Solving the Light Multiple Choice Questions of Class 7 Science Chapter 15 MCQ can be of extreme help as you will be aware of all the concepts. Question 12. Answer: Light energy is the form of energy which produces the sensation of vision. Free PDF download of Important Questions with solutions for CBSE Class 7 Science Chapter 15 - Light prepared by expert Science teachers from latest edition of CBSE(NCERT) books. Name the phenomenon that is involved in the formation of image of an object by a concave mirror. (b) concave mirror or convex lens, Question 7. Answer: Answer: Explain why are concave and convex mirrors called spherical mirrors. Answer: 3. The distance between the mirror and his image is 6 m. If the person moves 2 m towards the plane mirror, what would be the distance between the person and his image? So, when the disc is rotated very fast, then all the seven colours mix together due to which the disc appears to be white (see figure). Why is this type of mirror chosen? Question 1. Is the image formed by a plane mirror is always upright? Answer: When a white light is passed through a prism, it disperses into its seven constituent colours. Question 19. NCERT Solutions for Class 7 Science CBSE, 15 Light. (b) when the sun is behind you, Question 8. Question from very important topics are covered by NCERT Exemplar Class 7.You also get idea about the type of questions and method to answer in your Class 7th examination. Which of the following would you prefer to use while reading small letters found in a dictionary? Answers: Register online for Science tuition on Vedantu.com to score more marks in your examination. (b) both concave mirror and convex mirror The concave reflecting surface of a torch got rusted. A ………………….. is a curved transparent or translucent device that causes rays to either converge or diverge. Answer: So, dispersion of light is phenomenon of splitting up of white light into seven colours on passing through a transparent medium like a glass prism. 8. [NCERT Exemplar] Answer: False, an object can be seen even if the ray of light is emitted from some different sources of light and suffering the reflection from the object surface after getting incident on it. The mirror which can form a magnified image of an object is both convex and concave mirrors. Points To Remember; Very Short Q&A ; Short Q&A ; Long Q&A ; Chapter 3: Fibre to Fabric. (d) 0.25 m If we see the figure, then we will find that the length and breadth of the image of the candle and its flame to be the same as that of the original candle and its flame. Reproduction in Plants Class 7 Science Extra Questions Short Answer Type Questions Question 1. Answer: Answer: An erect and enlarged image of an object is formed only by the concave mirror or convex lens when object is inverted and placed between F and 2F. So, greater the shining of the surface, more will be the reflection. image on screen. Such types of lenses which always form virtual, erect and smaller image in spite of the different positions of an object are called concave lens. The image formed by a lens is always virtual, erect and smaller in size for an object kept at different positions in front of it. Class 6 Science MCQ Questions are available for free download. Question 25. No, we cannot get a real image for any position of an object from the mirror because convex mirror always forms virtual, erect and diminished image in spite of the position of object. Consider if one half of a convex lens is covered with a black paper, then state whether this lens produces a complete image of the object. They were shouting like a 5 years old child that they wanted the dinner so much eagerly in order to fulfil their stomach. 3. Points To Remember; Very Short Q&A ; Short Q&A ; Long Q&A ; Chapter 2: Nutrition in Animals . To obtain the image formed on the mirror changes the direction of light upon the shining of the moving!, Green, Blue, Indigo and Violet that light travels in a mirror... Object or reflected by it [ Value Based Question ] answer: when [ … ] we hope NCERT... Use when you do not class 7 science chapter 15 light extra questions access to physical copy very Short &... 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