Nupur needs a lense of power -4.5D for correction of her vision
a. What kind of defect in vision is she suffering from?
b. What is the focal length and nature of the corrective lens?
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She is suffering from myopia (short sightedness)
focal lenght should be
1/f=D
1/D=f
1/4.5=f
focal lenght should be
1/f=D
1/D=f
1/4.5=f
hardvi:
Thankyou
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