Physics
Complete the following sentence:
A convex lens is placed in water. Its focal length will ………
Related Questions
State the condition for each of the following :
(a) a lens has both its focal lengths equal.
(b) a ray passes undeviated through the lens.
Complete the following sentence:
If half part of a convex lens is covered, the focal length …….. change, but the intensity of image ………
Complete the following sentence:
The focal length of a thin convex lens is …….. than that of a thick convex lens.
Name the two kinds of lens? Draw diagrams to illustrate them.