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A concave mirror is used as a head mirro...

A concave mirror is used as a head mirror by ENT specialists. The same mirror can also be used as a shaving mirror. Why?

Text Solution

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A concave mirror converges the rays of light falling on it in a direction parallel to the principal axis, on to its focus. That is why ENT specialists use it as a head mirror.
When an object is held between the pole and the principal focus of a concave mirror, the mirror forms a virtual, erect and magnified image of the object. That is why it can be used as a shaving mirror.
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Knowledge Check

  • A concave mirror cannot be used as :

    A
    a magnifying mirror
    B
    a torch reflector
    C
    a dentist's mirror
    D
    a rear view mirror

  • Shaving mirror is a

    A
    Concave mirror
    B
    Convex mirror
    C
    Plain mirror
    D
    Simple mirror

  • Shaving mirrors are

    A
    convex mirrors
    B
    concave mirrors
    C
    plane mirrors
    D
    none of these

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