A student focuses the image of a well illuminated distant object on a screen using a convex lens. After that he gradually moves the object towards the lens and each time focuses its image on the screen by adjusting the lens.
- In which direction-towards the screen or away from the screen, does he move the lens?
- What happens to the size of the image-does it decrease or increase?
- What happens to the image on the screen when he moves the object very close to the lens?
CBSE DELHI - SET 1 2016
Download our app for free and get started
- As the object is moved towards the lens, the image distance increases. Thus, the student moves the lens away from the screen to focus the image.
- The size of the image increases when the object is moved towards the lens.
- When the object is moved very close to the lens, no image is formed on the screen. A virtual image is formed behind the object on the same side of the screen
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1View SolutionWhere would the image be formed by a convex mirror if the object is placed:
- Between infinity and pole of the mirror?
- At infinity?
- 2View SolutionState and define the SI unit of power of a lens.
- 3View SolutionList four characteristics of the images formed by plane mirrors.
- 4View SolutionWhich of the following diagrams shows the ray of light refracted correctly?
- 5View SolutionWith the help of a labelled diagram, explain how a concave lens diverges a beam of parallel light rays.
- 6View SolutionDraw ray diagrams showing the image formation by a concave mirror when an object is placed:
Between pole and focus of the mirror. - 7View SolutionDescribe with a suitable diagram, how a convex mirror diverges a parallel beam of light rays. Mark clearly the pole, focus and centre of curvature of convex mirror in this diagram.
- 8View SolutionIdentify the device used as a spherical mirror or lens in following cases, when the image formed is virtual and erect in each case.Object is placed between infinity and device, image formed is diminished and between pole and focus, behind it.
- 9View SolutionDefine and show on a diagram, the following terms relating to a concave mirror:
- Aperture.
- Radius of curvature.
- 10View SolutionExplain with the help of a diagram, why the convex lens is also called a converging lens.