Q. 164.0( 4 Votes )

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Answer :

(i) When a ray of light passing through its optical center, then the incident ray is refracted straight which is shown in following diagram:

(ii) When a ray of light is incident on a concave lens, parallel to the principal axis, then the ray diagram is as follows:

(iii) When a ray of light incident on a concave lens directed towards the principal focus, then the ray diagram will be as follows:

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