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Concave mirror

Image formed by concave mirror may be real or virtual, may be inverted or erect, may be smaller, larger, or equal in size of object.
  1. When object is placed at infinite (i.e., u = ∞) (Fig. 4).
     
     
    114549.png
    Fig. 4
     
    Image
    • At F
    • Real
    • Inverted
    • Very small in size
    • Magnification m << – 1
  2. When object is placed between infinite and center of curvature (i.e., u > 2f) (Fig. 5).
     
    114624.png
    Fig. 5
     
    Image
    • Between F and C
    • Real
    • Inverted
    • Small in size
    • m < –1
  3. When object is placed at center of curvature (i.e., u = 2f) (Fig. 6).
     
    114695.png
     
    Fig. 6
     
    Image
    • At C
    • Real
    • Inverted
    • Equal in size
    • m = –1
  4. When object is placed between center of curvature and focus (i.e., f < u < 2f) (Fig. 7).
     
    114705.png
    Fig. 7
     
    Image
    • Between 2f and ∞
    • Real
    • Inverted
    • Large in size
    • m > –1
  5. When object is placed at focus (i.e., u = f) (Fig. 8).
     
    114768.png
     
    Fig. 8
     
    Image
    • At
    • Real
    • Inverted
    • Very large in size
    • m >> –1
  6. When object is placed between focus and pole (i.e., u < f) (Fig. 9).
     
    114858.png
     
    Fig. 9
     
    Image
    • Behind the mirror
    • Virtual
    • Erect
    • Large in size
    • m > +1

Convex mirror

Image formed by convex mirror is always virtual, erect and smaller in size.
  1. When object is placed at infinite (i.e., u = ∞) (Fig. 10).
     
    114846.png
     
    Fig. 10
     
    Image
    • At F
    • Virtual
    • Erect
    • Very small in size
    • Magnification m << + 1
  2. When object is placed any where on the principal axis (Fig. 11).
     
    114895.png
     
    Fig. 11
     
    Image
    • Between P and F
    • Virtual
    • Erect
    • Small in size
    • Magnification m < + 1




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