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Question
Fri November 04, 2011 By: Raghu Rao

# AN OBJECT IS 15 cm FROM THE SURFACE OF A REFLECTIVE SPHERICAL CHRISTMAS TREE ORNAMENT 6cm IN DIAMETER. WHAT ARE THE MAGNIFICATION AND POSITION OF THE IMAGE?

Sat November 05, 2011

The ornament is a convex mirror, so  . The object distance is positive when the object is in front of the mirror. Therefore,  and the mirror equation gives

1/q = (2/R) - (1/p) = (2/-3)  (1/15)

Or   q = -1.36 cm

The magnification is then   M= - (q/p) = (-1.36/10) =0.136

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# in an experiment the focal length of a convex lens a student obtained a sharp and inverted image of a distant tree on the screen behind the lens.she then removed the screen and looked through lens in the direction of the object .she will see a) an inverted image of the tree at the focus of the lens b)no image as the screen is removed c) a blurered image on the wall of laboratory d0 an erect image of the tree on the lens pls explain me the answer elaborately

Sun January 29, 2017

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