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प्रश्न
A convex lens has focal length 12 cm with an object at a distance of 20 cm in front of the lens. He obtains a blurred image on the screen placed at a distance of 23 cm in front of the lens. In order to obtain the clear image, he has to move the screen ______.
विकल्प
towards the lens
away from the lens
to a position very far away from the lens
either towards or away from the lens
MCQ
रिक्त स्थान भरें
उत्तर
A convex lens has focal length 12 cm with an object at a distance of 20 cm in front of the lens. He obtains a blurred image on the screen placed at a distance of 23 cm in front of the lens. In order to obtain the clear image, he has to move the screen away from the lens.
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