Draw a ray diagram to show the path of the refracted ray in each of the following cases:
A ray of light incident on a concave lens is:
A ray of light incident on a concave lens is:
- Passing through its optical centre.
- Parallel to its principal axis.
- Directed towards its principal focus.
CBSE OUTSIDE DELHI - SET 2 2014
Download our app for free and get started
For a concave lens,
- The ray diagram for a ray of light passing through the optical centre of the concave lens will emerge without any deviation.
- For a ray of light directed towards the principal axis, after refraction from a concave lens, appears to diverge from the principal focus on the same side of the lens.
- For a ray of light directed towards its principal focus, goes parallel to its principal axis after refraction through the lens.
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 SolutionWhat is meant by the ‘angle of incidence’ and the ‘angle of refraction’ for a ray of light? Draw a labelled ray diagram to show the angle of incidence and the angle of refraction for a refracted ray of light.
- 2View SolutionWhat is the difference between regular reflection of light and diffuse reflection of light? What type of reflection of light takes place from:
- A cinema screen.
- A plane mirror.
- A cardboard.
- Still water surface of a lake
- 3View SolutionThe image of an object formed by a mirror is real, inverted and is of magnification - I. If the image is at a distance of 40 cm from themirror, where is the object placed? Where would the image be if the object is moved 20 cm towards the mirror? State reason and also draw ray diagram for the new position of the object to justify your answer.
- 4View SolutionHow is the refractive index of a medium related to the speed of light? Obtain an expression for refractive index of a medium with respect to another in terms of speed of light in these two media?
- 5View SolutionA concave lens of focal length 15cm forms an image 10cm from the lens. How far is the object placed from the lens? Draw the ray-diagram.
- 6View SolutionThe diverging lens in part (a) is replaced by a converging lens also of focal length 100mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
- 7View Solution‘‘A lens can form a magnified erect image as well as magnified inverted image of an object placed in front of it.’’ State the nature of this lens and draw ray diagrams to justify the above statement. Mark the positions of O, F and 2F in the diagram.
- 8View SolutionHow would a pencil look like if you saw it through (a) a concave lens, and (b) a convex lens? (Assume the pencil is close to the lens). Is the image real or virtual?
- 9View SolutionTwo lenses A and B have power of (i) + 2 D and (ii) -4D respectively. What is the nature and focal length of each lens?
- 10View SolutionSudha finds out that the sharp image of the window pane of her science laboratory is formed at a distance of 15cm from the lens. She now tries to focus the building visible to her outside the window instead of the window pane without disturbing the lens. In which direction will she move the screen to obtain a sharp image of the building? What is the approximate focal length of this lens?