If an object is placed at centre of curvature of a convex lens, the image height is $5 c m$ . What will be the height of the image if the same object is placed between centre of curvature and focus of the convex lens?

Less than

5 c m

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Equal to

5 c m

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Greater than

5 c m

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Infinitely large

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Solution

The correct option is C Greater than $5 c m$
If object is kept at centre of curvature, image height will be equal to object height. So, the object height is $5 c m$ .

When the same object is kept between centre of curvature and focus of lens, the image height will be greater than that of object height as shown. Hence, the image height will be greater than $5 c m$ .

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Q. An object is placed between a convex and a concave mirror. The pole of the convex mirror coincides with the centre of curvature of the concave mirror. Suppose an object is placed at the focus of the concave mirror. What will be the nature of the image formed by the concave mirror of the image formed by the convex mirror?

Question 3
Under which of the conditions a concave mirror can form an image larger than the actual object?

(a) When the object is kept at a distance equal to its radius of curvature.
(b) When object is kept at a distance less than its focal length.
(c) When object is placed between the focus and centre of curvature.
(d) When object is kept at a distance greater than its radius of curvature.

Q. When an object is placed between the centre of curvature and the focus of a concave mirror, its image will be:

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If an object is placed at centre of curvature of a convex lens, the image height is 5 cm. What will be the height of the image if the same object is placed between centre of curvature and focus of the convex lens?

If an object is placed at centre of curvature of a convex lens, the image height is $5 c m$ . What will be the height of the image if the same object is placed between centre of curvature and focus of the convex lens?