Observation

This was not a popular question among candidates. Many candidates attempted this question but few candidates were able to give three correct applications. Also, some candidates gave incomplete answers to score zero. Performance was low.

The expected answer is

               -  Holographs
-  Drilling of metals
-  cutting of metals
-  Peeling of metals
-  Welding (of metals)
-  Surgery/medical treatment
-  Reading bar codes
-  Recording on compact discs