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Electrical Engineering

147 A ray directed towards the centre of curvature of a spherical mirror a) become parallel to principal axis b)retraces its path c)appears to diverge from focus d)passes through focus.

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147 A ray directed towards the centre of curvature of a spherical mirror
a) become parallel to principal axis b)retraces its path
 c)appears to diverge from focus d)passes through focus.
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b)retraces its path
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