Question 1 What is night blindness? What causes night blindness? Question 2 How does eye adjust itself to deal with light of varying intensity? Question 3 Why we cannot see our surrounding clearly when we enter a darkened cinema hall from bright sunshine but our vision improves after some time? Question 4 How does the eye lens differ form the ordinary convex lens made … [Read more...] about Human Eye
Light
Formation of Image, Periscope, Kaleidoscope
Question 1 State few characteristics of image formed by a plane mirror? Question 2 What is a periscope? Question 3 State the various uses of periscope? Question 4 Explain how a hair dresser makes you see hair at the back of your head after the hair cut is complete? Question 5 How many images of an object will be formed when the object is placed two plane mirrors … [Read more...] about Formation of Image, Periscope, Kaleidoscope
Reflection of Light
Question 1 What is meant by luminous object? Give example? Question 2 What is meant by non-luminous objects?Give example? Question 3 Define the term reflection of light? Question 4 What is meant by incident ray? Question 5 What is meant by reflected ray? Question 6 What do you mean by point of incidence? Question 7 Define the angle of incidence? Question 8 … [Read more...] about Reflection of Light