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A highly polished surface such as a mirror reflects most of the light falling on it. In our daily life we use two types of mirrors — plane and spherical. The reflecting surface of a spherical mirrors may be curved inwards or outwards. In concave mirrors, reflection takes place from the inner surface, while in convex mirrors reflection takes place from the outer surface.
Which one of the following materials cannot be used to make a lens?
Raman uses a lens to focus sunlight onto a piece of paper and it starts to burn. What type of lens is he using?
A person got his eyes tested by an optician. The prescription for the spectacle lenses to be made reads : Left eye : + 2.50 D Right eye : + 2.00 D
What is the distance between the pole and focal point of a spherical mirror called?
Define the following terms in the context of a diverging mirror : (i) Principal focus (ii) Focal length Draw a labelled ray diagram to illustrate your answer.
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