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प्रश्न
Why does a driver use a convex mirror instead of a plane mirror as a rear view mirror?
Illustrate your answer with the help of a ray diagram.
उत्तर
A convex mirror diverges the incident beam and always forms a virtual, small and erect image between its pole and focus. Thus, a driver can see all the traffic approaching from behind. This fact enables the driver to use it as a rear view in vehicles to see all the traffic approaching from behind.
संबंधित प्रश्न
A ray of light is incident on a plane mirror at an angle of 30°. What is the angle of reflection
Name the spherical mirror which (i) diverges (ii) converges the beam of light incident on it. Justify your answer by drawing a ray diagram in each case.
Discuss the position and nature of image formed by a convex mirror when an object is moved from infinity towards the pole of mirror.
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray:
The radius of curvature of a convex mirror is 40 cm. Find its focal length.
Define the following term in relation to concave mirror.
Principal axis
An object is placed in front of a concave mirror as shown in the following figure. By scale drawing, find the nature of the image. Given f = 10 cm, v = 30 cm.
Geometric centre of the spherical mirror is ______.
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
A converging lens of focal length f is placed at a distance 0.3 m from an object to produce an image on a screen 0.9 m from the lens. With the object and the screen in the same positions, an image of the object could also be produced on the screen by placing a converging lens of focal length.
