Section E: Give a long answer to the case based question given below.
Azim Taraporewala was a traveller and science enthusiast. During one of his travels he found himself on the edge of an island without any mode of communication. As he had read in many stories, he thought he would light a fire on the beach and travelling boats or ships could see that fire and come to give him a ride. He had run out of lighters and match-sticks but had a reading glass. Being a science enthusiast he knew some tricks and used that lens and a scrap of paper to light a fire, with the help of scorching rays from the sun.
A. Which lens can be used by Azim to create the fire?
B. What property of the lens helps Azim to create the fire?
C. List two more uses of this kind of lens.
D. Explain with reason the condition under which the lens can form both real as well as virtual images.
A. Which lens can be used by Azim to create the fire?
B. What property of the lens helps Azim to create the fire?
C. List two more uses of this kind of lens.
D. Explain with reason the condition under which the lens can form both real as well as virtual images.
A.
B. property.
C. To correct , .
D. If the object is kept between the optical centre and the focus the image obtained is , rest in all cases the image is .