How will you decide whether a given piece of glass is a convex lens,concave lens or a plane glass plate?

  • A
    By observing the thickness of the glass.
  • B
    By holding it over printed matter and observing the size of the letters.
  • C
    By checking the weight of the glass.
  • D
    By measuring the refractive index.

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Similar Questions

$A$ virtual,magnified and erect image can be formed by a concave mirror.

$A$ concave mirror can be used to obtain a parallel beam of light from a small lamp.

Discuss the position and nature of the image formed by a concave mirror when the object is moved from infinity towards the pole of the mirror.

The diagram given below shows an object $O$ and its image $I.$ Copy the diagram and draw suitable rays to locate the lens and its focus. Name the type of lens in this case.

In a plane mirror,the distance between the image and the mirror is the same as the distance between the object and the mirror.

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