Advertisements
Advertisements
प्रश्न
The distance between an object and a convex lens is changing. It is noticed that the size of the image formed on a screen is decreasing. Is the object moving in a direction towards the lens or away from it?
Advertisements
उत्तर
In the case of a convex lens, as the object moves away from it, the size of the image formed on a screen decreases.
APPEARS IN
संबंधित प्रश्न
Why do we prefer a convex mirror as a rear-view mirror in vehicles?
An object is placed at a distance of 40 cm in front of a convex mirror of radius of curvature 40 cm. List four characteristics of the image formed by the mirror.
Draw diagram to show the action of convex mirror on a beam of parallel light rays. Mark on this diagram principal axis, focus F, centre of curvature C, pole P and focal length f, of the convex mirror.
State whether the following statement is true or false:
A diverging mirror is used as a rear-view mirror.
Draw the given diagram in your answer book and complete it for the path of a ray of light after passing through the lens.

Light travels in the same straight line path while passing through different media.
Write true or false
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
A driver uses a convex mirror as a rearview mirror. Explain the reason with the help of a ray diagram.

What do you observe when an object is placed anywhere between P and infinity in front of a convex mirror?
