Question

I want observation table for the experiment of finding focal length of convex mirror using a convex lens,

Answer 1

Explanation:

In order to find the focal length of convex mirror using convex lens, you need to find certain things first. Like

• Rough focal length of convex lens
• Actual length of knitting needle
• The observed distance between the needle image and convex mirror back

The observation table is given as

                                                 focal length, f(cm)

                                    reading 1          reading 2         reading 3         average

small concave mirror

large concave mirror

small convex mirror

large convex mirror