Student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens.

Away from the screen

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Towards the screen

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To a position very far from the screen

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Either towards or away from the screen depending upon the position of the object

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Solution

The correct option is D Towards the screen
To obtain a distinct image on the screen, student should have to move lens towards the screen, because second focus will behave as screen.

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Similar questions

Q. A student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens
(a) away from the screen
(b) towards the screen
(c) to a position very far away from the screen.
(d) either towards or away from the screen depending upon the position of the object.

Q. A student gets a blurred image of a distant object on a screen which is fixed at a place. In order to obtain a sharp image on the screen, he will have to shift the mirror:
(1) towards the screen
(2) away from the screen
(3) either towards or away from the screen
(4) very far away from the screen

Q. A student obtained a sharp image of the grill of a window in the laboratory on a screen, using a convex lens. For getting better results, her teacher suggested focussing of a distant tree instead of the grill. In which direction should the lens be moved for this purpose to get a sharp image on the screen?
(1) Towards the screen
(2) Away from the screen
(3) Behind the screen
(4) Very far away from the screen

To find the image-distance for varying object-distances in case of a convex lens, a student obtains on a screen a sharp image of a bright object placed very far from the lens. After that he gradually moves the object towards the lens and each time focuses its image of the screen.

(a) In which direction - towards or away from the lens, does he move the screen to focus the object?

(b) What happens to the size of image - does it increase or decrease?

Q. While performing an experiment on determining the focal length of a convex lens, a student obtains a sharp inverted image of the laboratory window grill on the screen and measures the distance between the screen and the lens. She then repeats the experiment and takes a distant tree as the object in the second case. In order to get a sharp image of the tree on the screen, she will now have to move the screen:
(1) slightly nearer to the lens
(2) slightly farther away from the lens
(3) very close to the lens
(4) very far away from the lens

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Student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens.

The correct option is D Towards the screenTo obtain a distinct image on the screen, student should have to move lens towards the screen, because second focus will behave as screen.

The correct option is D Towards the screen
To obtain a distinct image on the screen, student should have to move lens towards the screen, because second focus will behave as screen.