CBSE Class 10 Science 2021 Term 1 Solved Paper

Question : 18

Total: 60

A student wants to obtain magnified image of an object AB as on a screen. Which one of the following arrangements shows the correct position of AB for him/her to be successful?

Solution:

Image formation by Convex Lens

Objectlocation	Imageformed	Image nature	Imagesize
Infinity	At F2	Real and Inverted	Highly diminished
Beyond2F1	Between2F2‌ and ‌F2	Real and Inverted	Diminished
At 2F1	At 2F2	Real and Inverted	Same size
Between 2F1‌ and ‌F1	Beyond2F2	Real and Inverted	Enlarged
At F1	At infinity	Real and Inverted	Enlarged
Between F1 and O	On the same side as the object	Virtual and Erect	Enlarged

So in the question, it is given that student wanted to obtain a magnified image on the screen that means he wants a real magnified image of an object. So we get real magnified image of an object when the object is placed between C(2F1) and F1.

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