A ray of light passes undeviated after refraction from a thin convex lens when the ray is incident at __.

focus

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centre of curvature

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optical centre

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parallel to principal axis

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Solution

The correct option is C
optical centre

If a ray of light is incident on focus, it will become parallel to the principal axis after refraction

If rays are coming parallel to principal axis, it will pass through focus. After refraction.

If rays are incident at centre of curvature, then it will deriate after refraction

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Similar questions

A ray of light after refraction through a lens emerges parallel to the principal axis of the lens. The incident ray passes through :

(a) its optical centre

(b) its first focus

(d) the centre of curvature of the first surface.

A ray light incident on a lens parallel to its principal axis, after refraction passes through or appears to come from :

(a) its first focus

(b) its optical centre

(d) the centre of curvation of its second surface.

State whether the following statements are 'true' or 'false' by writing T/F against them.

(a) A convex lens has a divergent action and a concave lens has a convergent action.

(b) A concave lens, if kept at a proper distance from an object, can form its real image.

(d) A ray of light incident at the optical centre of lens, passes undeviated after refraction.

(e) A concave lens forms a magnified or diminished image depending on the distance of object from it.

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