Nội dung text Chp_10_Light - Reflection and Refraction (Lec-4).pptx
Lec - 4
Difference between a concave and convex mirror Concave mirror Convex mirror It is made by silvering the outer surface of a part of the hollow sphere, so reflection takes It is made by silvering the inner surface of the hollow sphere, so reflection takes place from the bulging surface. It converges the light rays incident on it after reflection. It diverges the light rays incident on it after reflection. The image formed by it is real as well as virtual. The image formed by it is always virtual for all positions of the object in front of it. O F CONVE X O CONCAV E O CONCAV E F 1
DISTINCTION BETWEEN A PLANE MIRROR, CONCAVE MIRROR AND CONVEX MIRROR O F CONVE X O CONCAV E O CONCAV E F 1 CASE 1 If the image is upright, of same size and it does not change in size by moving the mirror towards or away from the object, then which type of mirror is this? THE MIRROR IS PLANE
DISTINCTION BETWEEN A PLANE MIRROR, CONCAVE MIRROR AND CONVEX MIRROR O F CONVE X O CONCAV E O CONCAV E F 1 CASE 2 If the image is upright and magnified and increase in size on moving the mirror away, then which type of mirror is this? THE MIRROR IS CONCAVE
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