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# If an incident ray passes through the focus, the reflected ray will**(a) **pass through the pole ** (b) ** be parallel to the principal axis **(c)** retraces its path **(d)** pass through the centre of curvature

**(b) be parallel to the principal axis**

**
**

__Explanation__

According to the rules for obtaining images in mirrors & lens, "A ray of light passing through the focus of a mirror or lens becomes parallel to the principal axis after reflection".

Following is the direction of the light ray after reflection:

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