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Define focus?

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Define focus?

    • Posted by Jayant Sankhala 7 years ago

    CBSE > Class 10 > Science
    • 4 answers

    Jin Kazama 7 years ago

    When light rays coming from an object are parallel to principal axis and parallel to each other they strikes at mirror and after reflection they actually meet at a point on principal axis that point is called principal focus( or simply focus )of concave mirror.The focus of concave mirror is real hence when doing numericals arentaken as negative...

    2Thank You

    Ritu Sena 7 years ago

    Concave mirror:- If light rays coming parallel to the principal axis,strikes the mirror,then the reflected light rays meets at a point called focus. Convex mirror:- If light rays coming parallel to the principal axis, strikes the mirror, then the reflected rays appear to come from a point on the principal axis. This point is called focus.

    1Thank You

    Ritik Singh 7 years ago

    Concave mirror

    1Thank You

    Jin Kazama 7 years ago

    Of which mirror or lens

    2Thank You

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