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प्रश्न
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
उत्तर
FOCUS: For concave mirror
“A point on the principal axis at which the light rays incident parallel to the principal axis meet after reflection from the mirror.
FOCAL LENGTH: “The distance between focus and pole”. FP is focal length for a concave mirror.
FOCUS: For Convex mirror
“A point on its principal axis at which the light rays incident parallel to the principal axis appear to meet after reflection from the mirror”.
FOCAL LENGTH: “The distance between P and F is F.L.”
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संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Principal axis
Complete the following diagrams in Figure by drawing the reflected rays for the incident rays 1 and 2.
Answer the following question:
Distinguish between the convex mirror and the concave mirror.
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
Define the following term:
convex mirror
In torches, search lights and headlights of vehicles the bulb is placed ______.
Explain why a ray of light passing through the center of curvature of a concave mirror, gets reflected along with the same pattern.
