1.
The Lens Maker's Formula is
2.
The power of two thin lenses in contact is
3.
The least distance of distinct vision for a normal eye is
4.
A simple microscope uses
5.
The objective lens of a compound microscope has
6.
In an astronomical telescope (normal adjustment), the final image is formed at
7.
Assertion (A): A convex lens can be used as a magnifying glass. Reason (R): The object is placed within the focal length.
8.
Assertion (A): The objective lens of a telescope has a large focal length. Reason (R): It collects light from distant objects.
9.
For a concave mirror, the image formed by an object at infinity is
10.
The angular magnification of a simple microscope increases when
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