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CBSE Class 12-science Answered

1. The interior of a hollow metal sphere is polished to serve as a mirror. At a point 12cm from the centre of the sphere of radius 24 cm, a point source of light is placed. Locate its image formed by two successive reflections, the first reflection taking place at the  (a) far wall (b) near wall. 

2. And image produced by a concave mirror is one fourth the size of the object.  If the object is moved 10 cm towards the mirror, its image will be only half the size of the object. Calculate the focal length of the mirror. 

Asked by mridulabarua05 | 07 Feb, 2019, 09:10: AM
Expert Answer
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Solution is attached. 
Answered by Ankit K | 07 Feb, 2019, 10:55: AM
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