Light Standard 10.

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Presentation transcript:

Light Standard 10

Concave Mirror Hard Surface Reflecting Surface Focus Principal Axis Center of Curvature Pole Focus Hard Surface Reflecting Surface Radius of Curvature Focal Length

Convex Mirror Hard Surface Reflecting Surface Focus Principal Axis Center of Curvature Pole Focus Reflecting Surface Hard Surface Radius of Curvature Focal Length

Reflection from a Concave Mirror Principal Axis P

Reflection from a Convex Mirror Principal Axis C P

Rules of Reflection Incident ray parallel to principal axis Incident ray passing through center of curvature Incident ray passing through focus

Image is real, diminished and inverted Object at infinity Image at focus Image is real, diminished and inverted C F P

Object beyond C Image between center of curvature and focus Image is real, diminished and inverted C F P

Object at C Image at radius of curvature Image is real, of the same size and inverted C F P

Object between C and F Image beyond radius of curvature P F Image beyond radius of curvature Image is real, magnified and inverted

Image is real, highly magnified and inverted Object at F C F P Image at infinity Image is real, highly magnified and inverted

Object between F and P Image inside the mirror Image is virtual, magnified and erect C F P

Object at infinity Image at focus (inside the mirror) P Image at focus (inside the mirror) Image is virtual, diminished and erect

Object at a finite distance P F Image between focus and the mirror (inside the mirror) Image is virtual, diminished and erect

Mirror Formula Sign Convention Object is always placed to the left of the mirror Distance measured upwards from the principal axis +ve distance Against the direction of incident light -ve distance C F P origin Distance measured downwards from the principal axis -ve distance In the direction of incident light +ve distance 1 𝑣 + 1 𝑢 = 1 𝑓 𝑣 = distance of the image from the mirror. 𝑢 = distance of the object from the mirror. 𝑓 = focal length of the mirror. 𝑚𝑎𝑔𝑛𝑖𝑓𝑖𝑐𝑎𝑡𝑖𝑜𝑛 𝑚= ℎ𝑒𝑖𝑔ℎ𝑡 𝑜𝑓 𝑖𝑚𝑎𝑔𝑒 ℎ𝑒𝑖𝑔ℎ𝑡 𝑜𝑓 𝑜𝑏𝑗𝑒𝑐𝑡 =− 𝑣 𝑢

Appendix