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Solution


Q.

An optical component and an object S placed along its optic axis are given in Column I. The distance between the object and the component can be varied. The properties of images are given in Column II. Match all the properties of images from Column II with the appropriate components given in Column I. Indicate your answer by darkening the appropriate bubbles of the 4 × 4 matrix given in the ORS.                   [2008]
1 A-p, q, r, s; B-p, q, r, s; C-p, q, r, s; D-q.  
2 A-p, q, r, s; B-p, q, r, s; C-q; D-p, q, r, s.  
3 A-p, q, r, s; B-q; C-p, q, r, s; D-p, q, r, s.  
4 A-q; B-p, q, r, s; C-p, q, r, s; D-p, q, r, s.  

Ans.

(3)

Image formed by a concave mirror (A), convex lens (C), and concavo-convex lens (D) can be real, virtual, magnified, or diminished. The image is formed at infinity when the object is placed at the focus.

The image formed by a convex mirror (B) is always virtual.