Physics
Grade-10
Easy
Question
An object of height 2 m is located at a distance of 50 cm from a convex lens of focal length 25 cm. The image is of height ____ m.
Hint:
For a convex lens, magnification is the ratio between object distance and image distance.
The correct answer is: 2
An object of height 2 m is located at a distance of 50 cm from a convex lens of focal length 25 cm. The image is of height 2 m.
- Given, the object's height is 2m, the distance of the object is 50cm, and the focal length is 25cm.
- The focal length is the point where the image falls in the principle axis.
- As the focal length is 50 m, the image falls at 50cm from the pole.
- Thus, magnification m= v/u= 50/25= 2cm.
Related Questions to study
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The image of an object located at a distance of 25 cm towards the left of a concave lens is formed at a distance of 5 cm at the same side of the lens. The magnification produced by the lens is ____.
- 0.2
- -0.2
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Which of the following is correct?
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Magnification is mathematically given by ____, H is the height of the image and h is the height of the object.
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An object is located in front of a convex lens of focal length 53 cm at a distance of 106 cm. The image of this object will be formed at a distance of ____ cm from the lens.
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An object is situated at an infinite distance from a convex lens of focal length 55 cm. Its image will be formed at a distance of ___ cm from the lens.
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The ray diagram below shows a case of the image formation by a convex lens. Here the object distance is ____, and the image distance is _____.

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- Positive, positive
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