Advertisements
Advertisements
Question
Mixture of red + blue + green is passed through a convex lens as shown in the diagram below. State whether the ray passes through a single point or through different points on the principal axis after refraction.
Solution
The ray will pass through different points on the principal axis after refraction through the convex lens. Red colour will deviate the least, followed by green and then blue will deviate the most.
APPEARS IN
RELATED QUESTIONS
What is a lens?
A ray of light after refraction through a lens emerges parallel to the principal axis of the lens. The incident ray either passes through ______.
In the diagram below, XX’ represents the principal axis, O the optical centre and F the focus of the lens. Complete the path of rays A and B as they emerge out of the lens.
 |
 |
| (a) | (b) |
Study the diagram shown in the following Figure.
Name the lens LL’ and draw its outline.
Study the diagram shown in Fig. 5.56
where is the object located?
Study the diagram shown in Fig. 5.56
Where is the image formed?
The diagram given below shows the position of an object OA in relation to a converging lens whose foci are at F1 and F2.
Describe how the distance of the image from the lens and the size of the image change as the object is moved towards F1.
A ray of light incident parallel to the principal axis of a lens, passes undeviated after refraction.
Make the rrect choices in the following items :
An object is placed 50 cm from a connverging lens of focal length 30 cm. The image produced would be
Draw a ray diagram to show the image formed by a convex lens when the object is placed between F and 2F.
