When an object is placed 25 cm from a lens a real image is formed which one of the following?

Text Solution

The lens is a converging lensThe image may be magnified or diminishedThe focal length of the lens is less that 25cmThe focal length of the lens may be grater than 25 cm

Answer : a,b,c

Solution :  For a real object, a real image can be formed by convex lens only (any not by concave lens) and depending on the locatino of object from infinity to focus, the image can be enlarged or diminished. But when object is in between focus and optical center, image would be virtual. So, `fle25cm`.

When a real object is placed 25 cm from a lens, a real image is formed. Mark the wrong statement from the following:

The lens is a converging lens.

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The image may be magnified or diminished.

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The focal length of the lens is less than $25\text{cm}$.

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The focal length of the lens may be greater than $25\text{cm}$.

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