Question
Download Solution PDFThe focal length of a convex mirror whose radius of curvature is 30cm will be:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Convex mirror: It is an outward curved mirror that produces a diminished image.
- Convex mirrors either diverge a parallel beam of light into all directions or gather light from all directions and produce a parallel beam out of it.
- Focal length (f): The distance between the centre of the mirror and the focal point (where parallel rays of light meet or appear to meet) of the mirror is called the focal length.
- The radius of curvature (R): The distance between the centre of the lens or mirror to the vertex which is located on the local optical axis is called the Radius of Curvature.
- The focal length is half of the radius of curvature.
f = R/2
CALCULATION:
Given that:
Radius of curvature (R) = 30 cm,
The focal length (f) = R/2 = 30/2 = 15 cm
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