Related Questions

What type of lens is used to correct vision of a person suffering from Myopia?
A Convex lens
B Concave lens
C Crossed lens
D Cylindrical lens
Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?
A -4.33 diopters
B 12.33 diopters
C -12.33 diopters
D 4.33 diopters
Rajat has hypermetropia. What type of lens will the ophthalmologist recommend to correct his vision?
A Bifocal
B Concave
C Progressive
D Convex
Identify the error : In the fifteenth century , Leonardo da Vinci suggested that defective Vision (i) "can be corrected by" (ii) "placing a" lens (iii) "indirect contact (iv) "with the eye.
A (i)
B (ii)
C (iii)
D (iv)
একটি দ্বি-উত্তল অভিসারি লেন্সের প্রত্যেক পৃষ্ঠের বক্রতার ব্যাসার্ধ 30cm এবং গ্লাসের প্রতিসরাঙ্ক 1.50। লেন্সটির ফোকাস দৈর্ঘ্য কত হবে? (The radius of curvatures of both surfaces of a double convex lens are 30cm each and refractive index of glass is 1.50. What will be focal length of the lens?)
A 15 cm
B 30 cm
C 45 cm
D 60 cm
In a sample of 50 people, 19 had type O blood, 22 had type A blood, 7 had type B blood and 2 had type AB blood. If a person is selected randomly, find the probability that the person has neither type A nor type O blood?
A 15/25
B 31/50
C 11/25
D 9/50
Myopia is a defect of eyes which is also known as
A Far Sightedness
B Near Sightedness
C Astigmatism
D Night Blindness
Myopia is the disorder of which organ?
A Heart
B Ear
C Eye
D Kidney
Myopia is connected with ---
A ears
B eyes
C lungs
D legs
Antonym of 'Myopia'
A Naive
B Narcotic
C Farsighted
D Formidable

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