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(a) Draw a diagram to show the formation of image of a distant object by a myopic eye. How can such an eye defect be remedied ?
(b) State two reasons due to which this eye defect may be caused.
( c) A person with myopic eye cannot see objects beyond a distance of `1.5 m`. What would be the power of the corrective lens used to restore proper vision ?

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(a) N/A
(b) (i) increase in the length of the eye ball, (ii) decrease in focal length of the eye is fully relaxed.
( c) Here, `x = 1.5 m`
For proper vision, `f = - x = -1.5 m`
`P = (1)/(f) = (1)/(-1.5) = -0.67 dioptre`
Negative sign is for concave lens.

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