Suppose we wish to obtain the real image of a distant tree. The sides of an object and its image formed by a concave mirror are always interchanged. In the formation of a rainbow, the raindrops suspended in the atmosphere acts as tiny prism. He looked through his rear view mirror and saw an ambulance. Question from very important topics are covered by NCERT Exemplar Class 7. Since, image formed by the plane mirror shows lateral inversion, i.e. Firstly, take a circular cardboard disc of about 10 cm diameter, then divide this disc into seven equal segments and paint the seven colours of white light (red, orange, yellow, green, blue, indigo and violet) on these segments (as shown in figure given ). (c) plane mirror and convex mirror The outer shining surface of a round bottom steel bowl acts as a ………………….. mirror. Refraction of light is the name of a phenomenon which is involved in the formation of image of an object by a convex lens. 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. [HOTS] (c) The outer shining surface of a round bottom steel bowl acts as a __________ mirror. (c) Ramesh seems to be quite innovative with respect to the scientific methods and also very eager to learn science regarding phenomena. (a) which can be formed on the screen. Question 4. (c) is formed only by a plane mirror State the characteristics of images formed by a concave mirror. 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. (b) Concave lens and convex mirror What is a _____? 7. seven Question 9. Choose the correct answer: After doing one test, click on Start a New Test for more practice. This means that the mirrors of Boojho and Paheli respectively are [NCERT Exemplar] Question 1. (d) Both convex and concave mirrors Spectrum is the band of colours seen when the white light passes through the prism and splits into seven colours. A virtual image is larger than the object can be produced by a convex mirror. Answer: So, this is a reason why we require a shiny surface for reflection. 5. Answer: (a) A convex lens. Since, after the actual intersection of rays, the image obtained on the screen is always real image. Explain. A shopkeeper wanted to fix a mirror which will give a maximum view of his shop. There are more than 80 questions in the format of sets of 10 questions at a time. (d) 0.25 m False, a concave mirror is a mirror which forms the magnified image of an object. Register online for Science tuition on Vedantu.com to score more marks in your examination. 5. lens (b) 1 m Answer: 1. Answer: When light falls on a shiny surface, most of it bounces back. How will you identify them without touching? 5. 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. (d) only at the time of sunrise 8. concave 7. Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 7.. White light can be sunlight. [NCERT Exemplar] Question 4. 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. What type of mirror should he use? (a) Name the type of mirror which is used as a rear view mirror and why? Answer: (b) concave mirror and convex mirror Identify the nature of the lens. NCERT Exemplar Class 7 Science is very important resource for students preparing for VII Board Examination.Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 7. Answer: The mirror which can form a magnified image of an object is both convex and concave mirrors. Question 1. Therefore, the rapid rotation of Newton’s colour disc tells us that mixing of seven colours of the spectrum can give us white light. The image of distant tree will be at focus in case of concave mirror. Answer: State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in Figure 15.2. (c) only a plane mirror 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. (c) when the sun is overhead Question 10. The inner surface of the reflector of a torch acts as a ………………….. mirror. Convex lens is a lens which can converge the sun’s rays to a point and burn a hole in the piece of paper. (c) yellow Answer: This means that the mirrors of Boojho and Paheli are, respectively. A ………………….. is a curved transparent or translucent device that causes rays to either converge or diverge. (a) As we know that the extent of reflection depends upon the shining of surface. image on screen. How will you identify each one of them? Answer: 6. What type of mirror should he use? (c) both concave mirror and convex lens True As we know that sunlight consists of mixture of seven colours (i.e. You can refer to NCERT Solutions for Class 7 Science Chapter 7 Weather, Climate and Adaptations of Animals to Climate to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. As we know that the side mirror of a scooter must be of convex mirror so that we can view a wide range of traffic spread over a large area. [HOTS] If the … , i.e: Question 15 is called Newton ’ s disc preparing for VII Board Examination person! ; do check myCBSEguide app or website Science Based on NCERT Text for. 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