Starting from lensmakers equation explain how it gets modified in case of
(a) doubly convex symmetric lens.

Starting from lensmakers equation explain how it gets modified in case of (b) doubly concave symmetric lens.

Starting from lensmakers equation explain how it gets modified in case of (c) piano convex lens.

State and explain with proper diagram the rules to draw ray diagrams of convex lens.

What is a full from of SONAR? Explain how it works?

Explain how heat added or removed from a system is a path function

There are instructions written near the arrows in the following diagram. From this information form suitable equations and write the boxes indicated by arrows. Select any two equations from these boxes and find their solutions Also verify the solutions. By taking one pair of equations at a time how many pairs can be formed? Discuss the solutions for these pairs.

Explain Cartesian sign convention in case of refraction through lens.

There are instructions written near the arrows in the following diagram. From this information form suitable equations and write in the boxes indicated by arrows. Select any two equations from these boxes and find their solutions. Also verify the solutions. By taking one pair of equations at a time, how many Pairs can he formed ? Discuss the solutions for these pairs.

Solve the following examples/ numerical problems: When a pin of height 3 cm is fixed at 10 cm from a convex lens , the height of the virtual image formed is 12 cm . Find the focal length of the lens.

Explain how heat flow from colder region to a hotter region occur?