PDF chapter test TRY NOW

We shall now find the image's position, size, and nature by drawing the ray diagram for a small linear object placed on the principal axis of a concave mirror at different positions.
 
Case-I: When the object is placed at infinity, the light rays reaching the concave mirror parallel each other
6 (5).png
  
Position of the Image: The image is formed at the principal focus \(F\).
Nature of the Image: It is real, inverted and highly diminished in size.
 
Case-II: When the object is placed beyond the centre of curvature
 
15 (2).png
  
Position of the image: Between the principal focus \(F\) and centre of curvature \(C\).
Nature of the image: Real, inverted and smaller than an object.
 
Case-III: When the object is placed exactly at the centre of curvature
 
14 (2).png
  
Position of the image: The image is at the centre of curvature itself.
Nature of the image: It is real, inverted, and the same size as the object.
 
Case-IV: When the object is placed between the centre of curvature \(C\) and principal focus \(F\)
 
13 (2).png
  
Position of the imageThe image is beyond \(C\).
Nature of the image: Real, inverted and magnified.
 
Case-V: When the object is placed at the principal focus \(F\)
12 (4).png
 
Nature of the image: No image can be captured on the screen, nor any virtual image can be seen.
 
Case-VI: When the object is placed between the focus \(F\) and the pole \(P\)
11 (4).png
  
Position of the image: The image is behind the mirror.
Nature of the image: It is virtual, erect and magnified.