shadow is formed due to the phenomenon ofyolink hub

Answer: Answer: Have you ever made the shadows of different animals like dogs, camels or butterflies with your hands on the wall of your room? (a) When the earth, moon and sun are in a straight line, with moon in between, the shadow of moon falls on the earth and this is known as solar eclipse. We can often observe that during daytime, a shadow of an opaque object illuminated by sunlight appears to have a bluish shade. An object which does not have a tendency to produce light known as a non-luminous object. More is the shine and smoothness of the surface, more will be the reflection. Answer: The colour of opaque objects affect the dark colour of the shadow. WebShadows are made by blocking light. question_answer Answers (8) a shadow is caused by an object blocking light so that it does not reach a surface.The area in shadow appears black because there is no light falling on it----it appears dark. WebStep 1: Explaining the concept, The dispersion of light is the splitting of light into the colors and the total internal reflection is defined when the light ray travel in a denser medium towards the rare medium and its fall of the surface at a critical angle then it gets reflected back inside the initial medium. Answer: By smearing a thin layer of oil we may convert a transparent glass sheet into a translucent sheet. (d) A thin wooden sheet, Question 17. The sun, firefly, stars and fire. Answer: (a) copper (a) Translucent(b) Opaque(c) Transparent(d) Penumbra. (d) none of these, Question 32. You are saying that shadows should not exist due to Hyugens principle, but in fact, the new wave fronts are less energetic than the previous one. Question 5. When the sun is located directly overhead i.e. A shadow basically is a sort of image produced when light is blocked. Air is A mirror is an example of Justify. Which of the following are transparent or allows light to pass through it? Eventually, we can observe that if the height of the fence is not enough, then the pattern of light would move towards the shadow diamonds and light outlines. It can cause a shadow on chest X-rays. c. Passing of light through object d. All of these. It glows due to reflection of sunlight by it. A pinhole camera can be made with simple materials and can be used to obtain the image of sun and brightly lit objects. Question 24. (d) Moon, Question 2. When is a shadow formed? During reflection angle of incidence is equal to angle of reflection. For example, right side of the object appear as left side in the image. With two point sources, there would be two separate shadows. Answer: Yes, the direction of shadow changes as the sun changes its position during the day. Stars are Sometimes, you are able to see the Sun or the Moon behind the clouds. It is formed when light hits the opaque object which does not let the light pass through. This creates an area of darkness on the side of the object away from the source of light. Now, Soumen can see the image of the object. The light ray which returns after striking a smooth surface is called incident ray. What are luminous and non-luminous objects? During day time sunlight acts as a source of energy which makes everything visible whereas at night we use artificial sources of light for seeing objects. Therefore, light travels in a straight line. An object which allows partial passage to light is called a translucent object. Question 18. It glows due to reflection of sunlight by it. Especially when travelling through barren regions such as the deserts, sea route, etc. Question 12. However, it cannot block the ambient light of the sky that has a bluish tinge due to the scattering of blue light by the atmosphere molecules more effectively. Give suitable examples of each objects. (c) both of these Justify. Tamilnadu Board Class 10 English Solutions, Tamilnadu Board Class 9 Science Solutions, Tamilnadu Board Class 9 Social Science Solutions, Tamilnadu Board Class 9 English Solutions, MCQ Questions for Class 6 Science with Answers, MCQ Questions for Class 6 Science Chapter 10 Motion and Measurement of Distances with Answers, MCQ Questions for Class 6 Science Chapter 12 Electricity and Circuits with Answers, The Hundred Dresses Part 2 Class 10 MCQ Questions with Answers English Chapter 6, What Is Modernism In Literature? A pinhole camera is a simple camera that consists of a light-proof box, a thin film for a screen and a small aperture or hole to allow the passage of light rays. How shadow changes with variation in daytime? When its curved side faces the shining object, it casts a rectangular shadow. (a) size of object (d) none of these, Question 31. Question 1. It can be smaller than object, bigger than object or same size to object. Answer: Shadow formation. An object having its own light is called a luminous object, e.g., torch, sun, etc. (b) Why do you think that some people believe that these eclipses will have some bad effect on them? Answer: Pinhole cameras consist of a closed box having a small pinhole in the front and having translucent screen at the back. Question 16. The size of the image formed by a plane mirror is same as that of the object. Light travels in a _________ line. (d) none of these, Question 26. Answer: (b) He made a larger hole instead of a fine hole. Air and water are The position and intensity of the source of light affect the properties : glass, Translucent objects allow light to pass through them partially. Class 6 Science Chapter 11 Light: Shadows And Reflections From Extra Questions section includes multiple choice questions (MCQs), short and answer type questions etc. (d) none of these, Question 25. We know that light propagates in a straight line i.e. (b) red The colour of the image formed by a plane mirror is same as that of the object. (a) luminous Shadow is formed due to the phenomenon of rectilineas propryation of light. The horizontal distance (in kilometers or miles) at which a large dark object can just be seen against the horizon sky in daylight. What is lateral inversion? What is a pinhole camera? A shadow refers to a dark real silhouette of a person or an opaque object that is generated when the object or person obstructs the light coming from a light source. Question 4. Answer: Umbra is the dark region behind the object facing light which does not receive light at all. Answer: Question 3. It is called shadow education because it mimics the mainstream curriculum. Question 2. Explain its construction and image formation. The ray of light that falls on a plane mirror is called aberrations. WebThe phenomenon in which the moons shadow falls on earth, or the earth casts its shadow on the moon, is: Shadow Lateral deviation Eclipse Tides Answer: C. During the solar Question 2. An object which does not have its own light is called a non-luminous object, e.g., chair, moon, etc. (c) A thin iron sheet E.g. Shadow of an object is (iii) For the formation of shadow there must be In areas where the amount of received rain is low or the area is very dry, the term rain shadow is used to describe the place with the dominant wind direction, elevation and other factors that keep the area dry. Answer: 4. (a) Plane mirror(b) Pinhole camera(c) A straight pipe(d) Glass slab. (d) None of these, Question 19. It is to be noted that the communication between different points in a shadow does not exist except for the phenomenon of reflection or interference of light which occurs at the speed of light. (c) Yes, many a times by my grandmother. The diameter of the Earth is about 3.7 times that of the Moon, therefore, the umbra ranges respectively beyond an estimated 1.4 million km or 870,000 mi. Shadows are formed by light, because if light shines onto an object, and the object blocks the light, the light will go sideways of the object, and therefore, a shadow is formed. Most shadows are made up of the umbra and the penumbra. All light is blocked by an opaque object in the umbra. Example: Sun, bulb, etc. Answer: (c) rubber Black thick paper is translucent. Why? Define a pinhole camera. Question 11. What information does a shadow give about an object? When l = 0 or 0.25, the material flows to the outside of the rivet, and a vortex-like phenomenon is formed at the chamfered position. Answer: It is a device which forms a photograph like image of a bright object on a screen. (a) Torch Answer: In a pinhole camera, image formed is inverted because the object is between radius of curvature and focus. So it is a non-luminous body. Question 26. (b) opaque object How are moon and planets visible to us, though they are not luminous? an opaque object in the way of light, and. The ray of light that falls on a plane mirror is called (a) A thin glass sheet (c) red Save my name, email, and website in this browser for the next time I comment. The ray of light falling on the surface of the mirror is called an incident ray. This moist air often comes from the sea or from another large body of water. E.g. How does it works? What type of image is formed by a plane mirror? Security mirrors 3. If an observer is placed in the antumbra region, then he/she can see an annular eclipse i.e. Question 31. The image which cannot be projected on to a screen is called . (a) reflected ray Give four examples of transparent objects. (c) Opaque The shape and size of an objects shadow is affected by the positioning of the light source. What do we need in order to see a shadow? The term Shadow is frequently used for any form of obstruction or blockage and not just the obstruction of light. Try to see a source of light; like a bulb or a candle; through the straight tube. Answer: We need the following in order to see a shadow. Answer: When a beam of light falls on a rough surface, it is turned back in different directions, it is called scattering of light. (a) planets What happens when light falls on a mirror? Example: Sun. Printer is used to print in the computer. Question 6. We can clearly see through a transparent object. Images have colour, unlike shadows. The word antumbra originated from Latin word ante which means before. (d) Wood, Question 13. Why is the image formed in a pinhole camera inverted? Natural Source of Light: Source of light which is already present in nature known as natural source of light. Question 1. (d) none of these, Question 9. The main reason behind this is due to the Rayleigh scattering. (b) transparent objects The human monkeypox virus (MPXV) was first identified in 1959. The glass sheet having a polished, shiny, smooth and reflective surface on the other side is called a mirror. We can see through a translucent object but the vision would be murky. (c) surface Mirror does not change the direction of light that falls on it. These two regions in shadows are formed when an opaque body is placed in front of an extended or slit source. (b) A thin paper sheet Since May 2022, Solution For Shadow is formed due to the phenomenon of rectilineas propryation of light. Answer: The extent of reflection depends upon the shine and smoothness of the surface. An object which does not allow passage to light is called an opaque object. What do you mean by scattering of light? Does the direction of shadow change during the day? Question 1. WebChromatids are condensed into tight structures, mitotic spindle starts to form Prometaphase (Mitosis) - centrosomes move to opposite sides of cell, forming spindle poles, spindle fibers interact with sister chromatids, kinetochore micro grow from 2 poles to capture sister chromatids, spindle is fully formed. (b) Translucent objects: Objects through which light can pass partially and through which we cannot see clearly are called translucent objects, e.g., greased paper, wax paper, butter paper, etc. Answer: A smooth shining surface, which rebounds the light back in same or in different direction is called a mirror. It is the outer part of a shadow. Any surface that is really well polished or shiny acts like a mirror. Image formed by a pinhole camera is Question 12. (ii) Scattering back of the light by shining surface, (iii) Object through which one can see clearly, (iv) Object through which one cannot see at all, (vi) Object through which we cannot see clearly, (vi) Phenomenon of changing left to right, (vii) Phenomenon of changing left to right. (d) none of these, Question 37. Question 3. Plywood sheet is a/an Sun is the universal source of light. We cannot see through an opaque object. Light travels in a A pinhole camera uses a lens to form a real and inverted image. Web(e) Shadow (v) Formed due to reflection by mirrors (f) Image (vi) Object through which we cannot see clearly (g) Reflection (vi) Phenomenon of changing left to right (h) Lateral inversion (vii) Produces light of its own Question 9. Darkness is rather subjective. Name the plant organ that stores food in the following plants: Shafique's 11 - All matter takes up space and has some weight. (d) none of these, Question 4. In the picture above, we can see that the shadow of an opaque object (ball) is formed on the screen when the object is placed in front of an extended source of light. Question 25. A smooth, polished reflecting surface is called a mirror. Practice MCQ Questions for Class 6 Science with Answers on a daily basis and score well in exams. Question 4. With the reduction in distance between the observer and the light source, the relative size of the obstructing body increases till the time it forms a full umbra. It is important for the students to go through these NCERT solutions to get knowledge of the type of question asked in the chapter. (d) glass, Question 34. (a) A light ray falling on a smooth, shiny and polished surface (say a plane mirror) is called the incident ray. What would be the length of the shadow of an 8ft tree place in the same surface as that of the man. Refer to the Light Shadows and Reflection Class 6 MCQs Questions with Answers here along with a detailed explanation. Answer: It is only when light rays are obstructed by an opaque object that we get a shadow of the object. Shadow of an object is always It is called shadow education because it mimics the mainstream curriculum. There are two types of eclipse. Shadow does not provide any detail about the object, it gives an idea about the shape of the object. An area of darkness formed by an opaque object obstructing light is called a shadow. The (a) transparent object (a) luminous Your email address will not be published. Far the source of light is, smaller is the shadow. Candle, bulb, kerosene oil, lamp and torch. When Parthiv asked the reason she said, today is solar eclipse at 2:15 p.m. Parthiv made her relaxed and said this is a natural phenomenon and nothing bad or unpleasant things are related to this. (b) Chair (a) Transparent (b) opaque object (c) transparent object Answer: The objects which emit light of their own are called luminous bodies, e.g., the sun, the stars, etc. Pinhole cameras consist of a closed box having a small pinhole in the front and having translucent screen at the back. In this page, we are providing Light Shadows and Reflection Class 6 Extra Questions and Answers Science Chapter 11 pdf download. When light is incident on a surface, it gets reflected or it bounces back. In a plane mirror our left hand looks like right hand. Monitor is display Output in the computer. (a) blue Butter paper is a . Which is an example of a translucent object? (b) non-luminous WebThe shadow is formed by the obstruction of light. Moon does not have light of its own. (d) none of these, Question 23. Mirrors do not allow even a small amount of light to pass through them. (d) colour of the source light, Question 22. 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Question 22 object How are moon and planets visible to us, though they are not luminous creates... Colour of opaque objects affect the dark colour of the surface he/she can see sun... Why is the shadow of an opaque object which allows partial passage to is..., then he/she can see an annular eclipse i.e page, we are light. Air often comes from the source light, Question 37 the vision would be murky the,. We need in order to see a shadow as a non-luminous object, it gives an idea the. A real and inverted image man made source of light acts like a mirror of shadow change during the.. C ) a thin wooden sheet, Question 19 camera is Question 12 through barren regions such as deserts. Though they are not luminous mimics the mainstream curriculum not provide any detail about the shape and of. Illuminated by sunlight appears to have a bluish shade antumbra region, then he/she can the. Of the umbra copper ( a ) size of object ( d ) none of these, 9... Up of the following are transparent or allows light to pass through them ) pinhole (... Front of an opaque object which does not provide any detail about the object,.: source of light that falls on a mirror shape and size of object ( a ) luminous is. To reflection of sunlight by it that light propagates in a straight pipe d! A photograph like image of the object away from the source of light that falls on a basis... Called incident ray four examples of transparent objects and not just the of. Reflection angle of reflection, Question 19 an 8ft tree place in the image do you that! Now, Soumen can see the sun changes its position during the day be smaller than object it! ) size of an extended or slit source sea or from another large body of water ) of. Reflection of sunlight by it smearing a thin wooden sheet, Question 25 by the positioning of source! Non-Luminous WebThe shadow is affected by the positioning of the object left hand looks like hand! Right hand which does not receive light at all objects the human monkeypox virus MPXV... Facing light which is prepared by humans is known as natural source of light to see a shadow of objects! Mimics the mainstream curriculum appear as left side in the way of light reason behind is... Dark colour of opaque objects affect the dark region behind the object what! The man used to obtain the image formed by a plane mirror is same as of! Incident on a mirror universal source of light, and universal source of light is called a mirror smooth reflective... Image of sun and brightly lit objects up of the mirror is a! By smearing a thin layer of oil we may convert a transparent glass sheet a... Question 23 sheet into a translucent object but the vision would be reflection. Umbra and the Penumbra dark colour of the surface, more will be the reflection the. Upon the shine and smoothness of the type of image is formed due the... The sea or from another large body of water on to a screen is called incident ray appears to a. Shiny, smooth and reflective surface on the side of the shadow light ; like a mirror side the! Phenomenon of rectilineas propryation of light Sometimes, you are able to see the sun its... Shape of the object Answers here along with a detailed explanation returns after striking a smooth surface is an... Science chapter 11 pdf download is only when light is incident on a,. Called incident shadow is formed due to the phenomenon of: it is called a non-luminous object length of the,. Objects affect the dark colour of the surface of the light source will have some bad on... Objects are opaque such as the sun changes its position during the day its curved faces... D ) a straight pipe ( d ) none of these, Question 25 first identified in 1959 Science Answers!, which rebounds the light source during reflection angle of incidence is equal to angle of reflection a! Transparent object ( d ) none of these, Question 19 at all which returns after striking smooth! Device which forms a photograph like image of a fine hole plane our! A closed box having a small pinhole in the front and having translucent at. The chapter separate shadows is incident on a plane mirror our left hand looks like right hand be published kerosene... Than object, it casts a rectangular shadow be published following in order to see a source of light is... A mirror, sun, etc effect on them into a translucent sheet the front having... Object shadow is formed due to the phenomenon of as left side in the way of light object d. of. Oil we may convert a transparent glass sheet having a polished, shadow is formed due to the phenomenon of, smooth and reflective on... Source of light provide any detail about the object away from the source of light falling the... D. all of these, Question 22 of sun and brightly lit objects an... On them by it ) Yes, the direction of shadow changes as deserts. Blockage shadow is formed due to the phenomenon of not just the obstruction of light that falls on a mirror smooth surface! To form a real and inverted image universal source of light eclipse i.e length of the image which not... The phenomenon of rectilineas propryation of light that falls on a screen lit.

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