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A ray of light passing through centre of...

A ray of light passing through centre of curvature of a concave mirror retraces its path on reflection. Why ?

Text Solution

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This is because such a ray falls normally on the mirror
`angle i=0^@, angler=anglei=0^@`
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A ray of light passing through centre of curvature of a spherical mirror retraces its path on reflection from the mirror.

Explain why a ray of light passing through the centre of curvature of a concave mirror gets reflected along the same path after reflection.

Knowledge Check

  • Assertion (A) : A ray of light passing through the centre of curvature of a spherical mirror retraces its path after reflection from the mirror. Reason (R) : A ray of light passing through the centre of curvature of a spherical mirror is incident normally on the surface of the mirror.

    A
    Both (A) and (R) are true and (R) is correct explanation of the assertion.
    B
    Both (A) and (R) are true but (R) is not the correct explanation of the assertion.
    C
    (A) is true but (R) is false.
    D
    (A) is false but (R) is true.

  • An incident ray passes through the centre of curvature of a concave mirror. After reflection the ray_____

    A
    passes through the principal focus
    B
    retraces its path
    C
    passes along the principal focus
    D
    None of these

  • Statement I If a light ray retraces its path after reflection from a mirror, then mirror must be a plane mirror. Statement II When a light ray passing through the centre of curvature of a spherical mirror, it retraces its path

    A
    Statement I Is true, statement II Is true, Statement II Is the correct explanation for statement
    B
    Statement I Is true, statement II Is true statement 11 Is not the correct explanation for statement
    C
    Statement I Is true, statement II Is false
    D
    Statement I Is false, statement IE Is true

    • Similar Questions

    Explore conceptually related problems

    Explain why a ray of light passing through the centre of curvature of concave mirror gets reflected along the same path.

    Explain why, a ray of light passing through the centre of curvature of a convace mirror gets reflected back along the same path.

    Draw ray diagrams for the following cases when a ray of light : (i) passing through centre of curvature of a concave mirror is incident on it. (ii) parallel to principal axis is incident on convex mirror. (iii) is passing through focus of a concave mirror incident on it.

    A ray of light falling normally on a plane mirror retraces its path on reflection.

    The angle of incidence for a ray of light passing throught the centre of curvature of a concave mirror is :

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