“A concave mirror of focal length ‘f’ can form a magnified erect as well as an inverted image of an object placed in front of it.” Justify this statement stating the position of the object with respect to the mirror in each case for obtaining these images.
CBSE OUTSIDE DELHI - SET 1 2013
Download our app for free and get startedPlay store
When the object is placed at a distance less than ‘f’ (focal length) from the mirror, the image formed is virtual, magnified and erect. When the object is placed at a distance of ‘f’ (focal length) from the mirror, the image is real, inverted and highly magnified. When the object is placed at a distance more than (focal length) but less than ‘2f’, the image formed is real, inverted and magnified. When the object is placed at the distance of “If from the mirror, the image is real, inverted and same size of the object. When the object is placed at a distance more than ‘If from the mirror, the image formed is real, inverted and diminished.
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    To find-the image-distance for varying object-distances in case of a convex lens, a student obtains on a screen a sharp image of a bright object placed very far from the lens. After that he gradually moves the object towards the lens and each time focuses its image of the screen.
    1. In which direction - towards or away from the lens, does he move the screen to focus the object?
    2. What happens to the size of the image - does it increase or decrease?
    3. What happen when he moves the object very close to the lens?
    View Solution
  • 2
    A convex mirror used as a rear-view mirror in a car has a radius of curvature of 3m. If a bus is located at a distance of 5m from this mirror, find the position of image. What is the nature of the image?
    View Solution
  • 3
    List some things that concave lens and convex mirror have in common.
    View Solution
  • 4
    A convex lens of focal length 25cm and a concave lens of focal length 10cm are placed in close focal contact with each other. Calculate the lens power of this combination.
    View Solution
  • 5
    The focal length of a lens is +150mm. What kind of lens is it and what is its power?
    View Solution
  • 6
    Explain what is meant by a virtual, magnified image.
    View Solution
  • 7
    What is meant by power of a lens? What does its sign (+ve or -ve) indicate? State its S.I. unit. How is this unit related to focal length of a lens?
    View Solution
  • 8
    Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is $3 \times 10^8 m s ^{-1}$.
    View Solution
  • 9
    A concave mirror and a convex lens are held separately in water. What changes, if any, do you expect in the focal length of either?
    View Solution
  • 10
    Draw ray diagrams showing the image formation by a concave lens when an object is placed:
    Beyond twice the focal length of the lens.
    View Solution