Physics
Grade-10
Easy
Question
An image of an object located at infinity was formed by a convex lens. The magnification of the image _____.
- Is greater than 1
- Is less than 1
- Is negative
- Tends to 0
Hint:
For an object at infinity, image formed by a convex lens, the real image is formed at the focus. The size of the image is much smaller as compared to that of the object. So the magnification of the image will be zero.
The correct answer is: Tends to 0
An image of an object located at infinity was formed by a convex lens. The magnification of the image tends to 0.
- The image formation in a lens depends on the nature of the lens.
- The convex lens forms an enlarged or magnified image when it falls on the same side.
- The image size will be less when it is falling on the opposite side of the lens.
- When the object is placed at infinity, the real image is formed at the focus. The size of the image is highly diminished and point size.
- Thus, the magnification m= hi/ho will tend to zero.
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