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  • reflection to the incident ray when (a) it is parallel to the principal axis and falling on a concave mirror. (b) it is falling on a concave mirror while passing through its princip

reflection to the incident ray when

(a) it is parallel to the principal axis and falling on a concave mirror.

(b) it is falling on a concave mirror while passing through its principal focus.

(c) it is coming oblique to the principal axis and falling on the pole of a convex mirror.

Answers (1)

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(a) When the incident ray is parallel to the principal axis and falling on a concave mirror: The ray is reflected through the principal focus (F) of the concave mirror.

(b) When the incident ray is falling on a concave mirror while passing through its principal focus: The ray is reflected parallel to the principal axis.

(c) When the incident ray is coming obliquely to the principal axis and falling on the pole of a convex mirror: The ray is reflected obeying the law of reflection, angle of incidence = angle of reflection, with respect to the normal at the point of incidence (pole)

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Saumya Singh

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