A boy uses spectacles of focal length -50 cm. Name the defect of the v – McqOptions

MCQOPTIONS

1.	A boy uses spectacles of focal length -50 cm. Name the defect of the vision he is suffering from.
A.	Astigmatism
B.	Hypermetropia
C.	Myopia
D.	Presbyopia
Answer» D. Presbyopia

Discussion

No Comment Found

Related MCQs

An object is to be seen through a simple microscope of power 10 D. Where should the object be placed to reduce maximum angular magnification? The least distance for distinct vision is 25 cm.
What focal length should the reading spectacles have for a person for whom the least distance of distinct vision is 50 cm?
How does the magnifying power of a telescope change on increasing the diameter of its objective?
X can see objects in the ultra-violet light while human beings cannot do so. Identify X.
The upper part of the bi-focal lens is a convex lens while its lower part is a concave lens.
Which of the following is used to increase the range of a telescope?
Two lenses of focal lengths 5 cm and 50 cm are to be used for making a telescope. Which lens will you use for the objective?
A fly is sitting on the objective of a telescope. What will be its effect on the final image of the distant object?
How much intensity of the image is increased if the diameter of the objective of a telescope is doubled?
A boy uses spectacles of focal length -50 cm. Name the defect of the vision he is suffering from.