Multiple Choice Question XXIII — task. Science CBSE, Class 10.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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1. Which of the following convex lenses will have greater magnifying power?

Convex lens with focal length 10
Convex lens with focal length 20
Convex lens with focal length 15
Convex lens with focal length 25

2. When an object is placed at the focus of the convex lens, the image will be formed at:

Infinity
Twice the focal length
Focus of the lens
Between the optical centre of lens and its Focus

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