Why does a ray of light passing through the centre of curvature of a concave mirror gets reflected along same path after reflection?
Download our app for free and get started
A ray of light passing through the centre of curvature of a concave mirror retraces its path (gets reflected along the same path), because as the ray of light passes through centre of curvature of a concave mirror it strikes the mirror along the normal i.e. it incidences on to the mirror at 90 degree. Hence the incident ray coincides with the normal.
Therefore angle of incidence = 0 so, as we know according to law of reflection.
angle of reflection = 0, hence the angle of reflection too become zero degree, thus ray of light retraces its path.
Therefore angle of incidence = 0 so, as we know according to law of reflection.
angle of reflection = 0, hence the angle of reflection too become zero degree, thus ray of light retraces its path.
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 SolutionDraw a ray diagram to show the path of the reflected ray corresponding to an incident ray of light parallel to the principal axis of a convex mirror and show the angle of incidence and angle of reflection on it.
- 2View SolutionDraw a ray diagram to show the formation of a real diminished image of an object by a convex lens. In your diagram, the position of object and image with respect to the principal focus should be shown clearly.
- 3View Solution
- Find the nature, position and magnification of the images formed by a convex lens of focal length 0.20 m if the object is placed at a distance of:
- 0.50m
- 0.25m
- 0.15m
- Which of the above cases represents the use of convex lens in a film projector, in a camera, and as a magnifying glass?
- 4View SolutionAt what distance from a converging lens of focal length 12cm must an object be placed in order that an image of magnification 1 will be produced?
- 5View SolutionA boy with a mouth 5cm wide stands 2m away from a plane mirror. Where is his image and how wide is the image of his mouth?
- 6View SolutionIf two lenses (convex) are in contact with each other, what happens to the ray after refraction?
- 7View SolutionA communications satellite in orbit sends a parallel beam of signals down to earth. If these signals obey the same laws of reflection as light and are to be focussed onto a small receiving aerial, what should be the best shape of the metal 'dish' used to collect them?
- 8View Solution
- How can you bend light away from the normal?
- How must light travel out of a substance if it is not going to be refracted?
- 9View Solution“A concave mirror of focal length ‘f’ can form a magnified erect as well as an inverted image of an object placed in front of it.” Justify this statement stating the position of the object with respect to the mirror in each case for obtaining these images.
- 10View SolutionWhy does a driver prefer to use a convex mirror as a rear-view mirror in a vehicle?