A spherical mirror produces an image of magnification -1 on a screen placed at a distance of 50 cm from the mirror. (a) write the type of mirror. (b) find the distance of the image from the object. (c) what is the focal length of the mirror? (d) draw the ray diagram to show the image formation in this case. (cbse 2014)
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he cop moved along the street, looking strong and important. This was the way he always moved. He was not thinking of how he looked. There were few people on the street to see him. It was only about ten at night, but it was cold. And there was a wind with a little rain in it.
He stopped at doors as he walked along, trying each door to be sure that it was closed for the night. Now and then he turned and looked up and down the street. He was a fine-looking cop, watchful, guarding the peace.
People in this part of the city went home early. Now and then you might see the lights of a shop or of a small restaurant. But most of the doors belonged to business places that had been closed hours ago.
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