Question
Which one of the following lenses should be used to
correct the defect of astigmatism?Solution
Astigmatism is an optical defect in which visionis blurred due tothe inabilityof the optics of the eye to focus a point object into asharpfocusedimageontheretina.Thismaybe due to an irregular or toric curvature of the corneaorlens.Thetwotypesofastigmatismare regular and irregular. Irregular astigmatism is oftencausedbyacornealscarorscatteringinthe crystalline lens, and cannot be corrected by standard spectacle lenses, but can be corrected by contact lenses.
e-National Agriculture Market (e-NAM) was launched in the year___
Which of the following districts in Uttarakhand are not engaged in apple cultivation?
Conversion factor from P to P2O5 is
Which year is considered as International year of Soil Science?
Which nutrient deficiency is responsible for "Khaira disease" in paddy?
Toned milk should contain minimum ____% fat and ___% SNF.Â
Properties of ozone was discovered by
What is the High-volume spray fluid quantity?
Windbreaks are planted in which direction?
The enzyme which is involved in the softening of the fruit texture during ripening is
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