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THE MPU HR SEC SCHOOL. PRESENTED BY M. DINESH BABU M.A. MOSES SUSAI NATHAN J. NIJAMUDEN C.P. SATHISH M. SURENDAR GUIDED BY B.RAVINDHRANATH. LENS. A LENS IS A PIECE OF TRANSPARENT MATERIAL BOUND BY CURVED SURFACES. CONVEX LENS.

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THE MPU HR SEC SCHOOL

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The mpu hr sec school

THE MPU HR SEC SCHOOL

PRESENTED BY

M. DINESH BABU

M.A. MOSES SUSAI NATHAN

J. NIJAMUDEN

C.P. SATHISH

M. SURENDAR

GUIDED BY

B.RAVINDHRANATH.


The mpu hr sec school

LENS

A LENS IS A PIECE OF TRANSPARENT MATERIAL BOUND BY CURVED SURFACES


Convex lens

CONVEX LENS

CONVEX LENS IS A LENS WHICH IS THICKER IN THE MIDDLE THAN AT THE EDGES AND RAYS OF LIGHT CONVERGE AFTER PASSING THROUGH THEM.


Concave lens

CONCAVE LENS

CONCAVE LENS IS A LENS WHICH IS THINNER IN THE MIDDLE THAN AT THE EDGES AND RAYS OF LIGHT DIVERGE AFTER PASSING THROUGH THEM.


Conjugate foci

CONJUGATE FOCI

CONJUGATE FOCI ARE A PAIR OF POINTS ON THE PRINCIPAL AXIS OF THE LENS SUCH THAT AN OBJECT AT ONE OF THE POINTS PRODUCES AN IMAGE AT THE OTHER POINT.


Hypermetropia

HYPERMETROPIA

HYPERMETROPIA IS LONG SIGHT. IT IS A DEFECT OF THE EYE WHEN DISTANT OBJECTS CAN BE SEEN BY THE EYE,BUT NEAR OBJECTS CANNOT BE SEEN DISTINCTLY.

http://www.washington.edu/medical/uwmc/uwmc_clinics/eye/UW Department of Ophthalmology CATARACT SURGERY.htm


References

REFERENCES

http://depts.washington.edu/ophthweb/trial.html

http://www.schoolcircle.com/studycircle/physics/ph-ms-b-icse-lens-pagetwo.htm

http://www.schoolcircle.com/studycircle/physics/ph_ms_b_icse_lens_pageone.htm.http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/imgfor.html.c1

http://hyperphysics.phy_astr.gsu.edu/hbase/geoopt/imgfor.html#c1

http://www.ccgateech.edu/scivis/-vb-bin/shtml.execation/java

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Encyclopedia on CD_ROM.


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