[" i.Doctor has prescribed a lens having "],[" power "+1.5D" .What will be the focal "],[" length of the lens? What is the type "],[" of the lens and what must be the "],[" defect of vision? "]

Doctor has prescribed a lens having power +2 D . What will be the focal length of the lens ? What is the type of the lens and what must be the defect of vision ?

Power of a lens is + 3 D. What will be the focal length of the lens?

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?

Vijay is 16 yr old and wears a spectacle having a power of -2 D .Answer the following question: What Will Be the Focal Length of the Lens? What is the Type of the Lens and What Must Be the Defect of Vision?

Selwyn is 16 yr old and wears a spectacle having a power of +2 D .Answer the following question? What Will Be the Focal Length of the Lens? What is the Type of the Lens and What Must Be the Defect of Vision?

A lens has a focal length of, -10cm . What is the power of the lens and what is its nature?