When a fork is seen through lenses A and B one by one, it appears as shown in the diagrams. What is the nature of (i) lens A, and (ii) lens B? Give reason for your answer.
Download our app for free and get startedPlay store
When the fork is seen through lens A, it appears to be diminished. Such diminished object is observed when it is placed near a concave lens. Therefore, lens A is concave, i.e., diverging in nature. When the fork is seen through lens B, it appears to be enlarged. Such enlarged image is formed by a convex lens when an object is placed between the lens and its focus. Therefore, lens B is a convex, i.e., converging in nature.
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
    Which of the following diagrams shows the ray of light refracted correctly?
    View Solution
  • 2
    The velocity of light in water is $\frac{3}{4}$ times the velocity of light in vacuum. Find the refractive index of water.
    View Solution
  • 3
    What is the position of image when an object is placed at a distance of 10cm from a convex lens of focal length 10cm?
    View Solution
  • 4
    With the help of a ray diagram, determine the position, nature and size of the image formed of an object placed at the centre of curvature of a concave mirror.
    View Solution
  • 5
    Draw a ray diagram showing how a concave mirror can be used to produce a real, inverted and diminished image of an object.
    View Solution
  • 6
    Write down the magnification formula for a lens in terms of object distance and image distance. How does this magnification formula for a lens differ from the corresponding formula for a mirror?
    View Solution
  • 7
    An object is placed at a distance of 30cm in front of a convex mirror of focal length 15cm. Write four characteristics of the image formed by the mirror.
    View Solution
  • 8
    Refractive indices of four media A, B, C and D are given below:
    Medium
    Refractive index
    A
    B
    C
    D
    1.33
    1.44
    1.52
    1.65
    In which of these four media is the speed of light:
    1. Maximum, and
    2. Minimum?
    View Solution
  • 9
    With the help of a labelled diagram explain how a convex lens converges a beam of parallel light rays.
    View Solution
  • 10
    Light travels more quickly through water than through glass:
    1. Which is optically denser: Water or glass?
    2. If a ray of light passes from glass into water, which way will it bend: Towards the normal or away from the normal?
    View Solution