Chapter 9 - Ray Optics and Optical Instruments

important questions class 12 physics chapter 9 ray optics optical instruments 1
important questions class 12 physics chapter 9 ray optics optical instruments 2
important questions class 12 physics chapter 9 ray optics optical instruments 3
important questions class 12 physics chapter 9 ray optics optical instruments 4


Practise This Question

The intensity of light I1 received by the emitter plate in Lenard's photoelectric set-up is changed by moving the source to twice the initial distance. What is the new intensity I2 received by the emitter plate?