Question

How can we get concave & convex lens result from test tube completely filled with water​

Answer 1

Explanation:

I am so sorry my friend. I don't know the answer..

Answer 2

The concave and convex lens result from test tube completely filled can be determined from the focal length

• When dipped in water, the concave mirror's focal length remains unchanged as the focal length of the mirror is not dependant on the refractive index medium.

• In terms of water, the refractive index of the test tube is greater than the refractive index of the test tube with respect to air. Therefore, the focal length increases when a convex lens is dipped into the water.