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Question
Choose the correct ray diagram:
Choose the correct ray diagram:
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Solution
The correct option is B
A ray parallel to the principal axis, will pass through focus or appear to pass through focus after refraction from the lens and vice versa. A ray through optical center passes without any deflection.
In the first option, ray incident through the focus of concave lens passes through another focus after refraction which is not correct.
In the third option rays after refraction should be parallel because it is incident through focus, so it is incorrect.
In the fourth option, rays coming parallel to the concave lens should not pass through the focus but it should appear to pass through the focus.
A ray parallel to the principal axis, will pass through focus or appear to pass through focus after refraction from the lens and vice versa. A ray through optical center passes without any deflection.
In the first option, ray incident through the focus of concave lens passes through another focus after refraction which is not correct.
In the third option rays after refraction should be parallel because it is incident through focus, so it is incorrect.
In the fourth option, rays coming parallel to the concave lens should not pass through the focus but it should appear to pass through the focus.
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