Name the two lenses A and B

A B Name the processes A and B.

Two identical glass (mu_(g)=3//2) equiconvex lenses of focal length f are kept in contact. The space between the two lenses is filled with water (mu_(w)=4//3) . The focal length of the combination is

Name the two types of solids.

Name the two components of starch.

Name the two kinds of nephrons?

Name the two types of nutrient cycles.

Name the two types of nitrogen fixers.

Name the two types of primary productivity.

Name the two components of Malpighian body.

Name the two swellings found in spinal cord.