CLASS 10 CHAPTER 10 OBJECTIVE QUESTION ON LENS
1. WHAT IS THE UNIT OF LENS POWER A. METER B. DIPTEROUS C. CM D WATT 2. ARRANGE DECREASING ORDER OF REACTIVE INDEX OF WATER ,AIR , GLASS AND DIAMOND A. WATER >AIR >GLASS > DIAMOND B. WATER>GLASS >AIR > DIAMOND C. DIAMOND > GLASS>WATER>AIR D. DIAMOND >WATER> GLASS>AIR 3. AN OBJECT 25 CM HIGH IS PLACED IN FRONT OF A CONVEX LENS OF FOCAL LENGTH 30 CM .IF THE HEIGHT OF IM...