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Standard IX
Physics
Spherical Mirrors
Define the Pr...
Question
Define the Principal Focus of a Concave Mirror?
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Solution
Light rays that are parallel to the principal axis of a concave mirror converge at a specific point on its principal axis after reflecting from the mirror. This point is known as the principal focus of the concave mirror.
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Q.
Define the Principal Focus of a Concave Mirror?
Q.
Question 1
Define the principal focus of a concave mirror.
Q.
(a) Define (i) principal focus of a concave mirror, and (ii) focal length of a concave mirror.
(b) Draw diagram to represent the action of a concave mirror on a beam of parallel light rays. Mark on this diagram principal axis, focus F, centre of curvature C, pole P and focal length f, of the concave mirror.
Q.
Differentiate between principal focus of a concave and convex mirror
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Define the principal focus of a convex lens and that of a concave lens.
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