To Find The Focal Length Of A Concave Lens Using A Convex Lens
To find the focal length of a concave lens using a convex lens.
We use the lens formula in this experiment to calculate the focal length of the concave lens:
From sign convention, the f obtained from the above formula will be negative as v > u and u – v is negative.
To determine the rough focal length of the convex lens
The rough focal length of a convex lens = ……….
The actual length of the knitting needle, x = ………
Observed distance between the concave lens and image = ……..
Needle when knitting needle is placed between them, y = ……..
Index correction for u as well as v, x – y = ……..
The focal length of the given concave lens = …….. cm
Ans: Spherical lens is defined as a lens that is part of a sphere and has a surface that is spherical.
Q2. What type of lens is present in human eye?
Ans: Convex lens is present in human eye.
Q3. What are the factors affecting the power of lens?
Ans: Following are the factors affecting the power of lens:
Q4. What is the focal length of a lens?
Ans: The focal length of a lens is defined as the distance between the optical centre and the principal focus of the lens.
Ans: Lenses are used in spectacles, microscopes, in optical instruments, and in telescopes.
Stay tuned with StudySolver to learn more about other Physics-related experiments.
Your email address will not be published. Required fields are marked *
Save my name, email, and website in this browser for the next time I comment.