Draw ray diagrams to show the formation of three times magnified (a) real, and (b) virtual image of an object by a converging lens. Mark the positions of O, F and 2F in each diagram.
Draw ray diagrams to show the formation of three times magnified (a) real, and (b) virtual image of an object by a converging lens. Mark the positions of O, F and 2F in each diagram.
The ray diagrams for the formation of three times magnified (a) real, and (b) virtual image of an object by a converging lens are shown below:
In the above diagram, O is the object, F is the focus, and 2F is the centre of curvature of the lens.
Marking Scheme
- 1Draw the ray diagram for the formation of three times magnified (a) real, and (b) virtual image of an object by a converging lens.
- 2Mark the positions of O, F and 2F in each diagram.
Hint
Use the lens equation to find the image distance and magnification.
Quick Oral Answer
The ray diagrams show the formation of three times magnified (a) real, and (b) virtual image of an object by a converging lens. The object is placed at a distance of 2F from the lens, and the image is formed at a distance of 6F from the lens. The magnification of the image is 3 times the size of the object.
Analysis & Explanation
The ray diagrams show the formation of three times magnified (a) real, and (b) virtual image of an object by a converging lens. The object is placed at a distance of 2F from the lens, and the image is formed at a distance of 6F from the lens. The magnification of the image is 3 times the size of the object.
Common Mistakes
- 1Drawing the ray diagram incorrectly.
- 2Not marking the positions of O, F and 2F in each diagram.
Interesting Facts
The lens equation can be used to find the image distance and magnification.
The magnification of the image is 3 times the size of the object.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2017?
This question carries 3 marks in the CBSE Class 10 Science 2017 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Light — Reflection and Refraction" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Refraction of Light" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2017 paper?
This is a Short Answer question from Section A in the CBSE Class 10 Science 2017 paper.