Question

STATE COUNCIL OF EDUCATIONAL RESEARCH AND TRAINING

TELANGANA, HYDERABAD

ACADEMIC YEAR 2020-21

LEVEL - 2

CLASS: 10 MEDIUM: ENGLISH SUBJECT: PHYSICAL SCIENCE

Lesson: Refraction of light at curved surfaces Work sheet No: 37

Concept

Image formation by a convex lens for various positions of the object and to study the characteristics of the

images formed.

Learning Outcomes:

 Explains image formation by a convex lens for various positions of the object with the help of ray

diagrams.

 Describes the characteristics of the images formed

 Differentiate between the images formed by convex lens and concave lens.

Content

 We have learnt about the characteristics of the image formation when the object is placed at

infinity, beyond centre of curvature and at centre of curvature of a bi-convex lens.

Let us now some more situations

Situation 4:- Object placed between the centre of curvature and focal point:

When an object is placed between centre of curvature (C2) and focus (F2), we will get an image which is

the real inverted and magnified the image will form beyond C. See figure 15.

Situation 5:- Object located at the focal point:

When an object is placed at the focus (F2) the image will be at infinity. See figure 16. As the image is

formed at infinite distance, we cannot discuss the size and nature of the image.


answer the questions.​

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Explanation:

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