A person is advised to wear spectacles with convex lenses. State the defect of vision he is suffering from.

Surabhi from Std. X uses spectacles. The power of the lenses in her spectacles is 0.5 D . Identify the defect of vision Surabhi is suffering from.

Aniket from Std. X uses spectacles. The power of the lenses in his spectacles is -0.5 D. name the defect of vision Aniket is suffering from.

Amar is using spectacles with power - 2.5 D. What will be the focal length (in cm) of the lens used in spectacles? What is the type of the lens and what must be the defect of vision Amar is suffering from?

Surabhi from Std.X uses spectacles. The power of the lenses in her spectacle is 0.5 D. Answer the following question from the given information: (i) Identify the type of these used in her spectacles. (ii) Identify the defect vision Surabhi is suffering from. (iii) Find the local length of the lenses used in her spectacles.

A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses the image of a distant object in his case will be formed .