A student is diagnosed with myopia and has a far point at 40 cm from the eye
PHYSICS · Multi-part · CBSE · Physics · The Human Eye and the Colourful World · The Human Eye and the Colourful World
Problem
A student is diagnosed with myopia and has a far point at 40 cm from the eye. A pair of spectacles is to be prepared using a thin concave lens that is to be worn 2.0 cm in front of the eye.
(i) Calculate the focal length and power of the lens that will enable the student to see distant objects clearly.
(ii) When the corrective lens is in position, an object is placed 2.0 m in front of the spectacles. Determine the position of the image formed with respect to the eye.
(iii) Comment on whether the image produced lies at a distance the eye can comfortably focus upon and state its nature (real/virtual, erect/inverted).