quiz

Human Eye and Colourful World Quiz 6

Answer these simple questions correctly and earn coins

Difficulty Level :
15 Question

Popular Questions In Human Eye and Colourful World Quiz 6

  • The focal length of the lens to be used to correct hypermetropia when the near point distance is “d” cm.

  • The ability of accommodation of the eye usually decreases with ageing. This type of defect in vision is called ………

  • A person suffering from myopia and hypermetropia uses ……… lens.

  • Presbyopia can be corrected by using ……… lens.

  • The degree of convergence or divergence of light rays that can be achieved by a lens is called ……………

  • The reciprocal of focal length of a lens is called ………………

  • The unit of power is …………

  • In case of eye defect called “myopia” image is formed …………

  • If a person uses a lens of -2.5 D power, then the focal length of the lens is …………

  • Find the focal length of the lens if the power of the lens is – 2D

  • A doctor advised to use 4D lens. The focal length of the lens is …………

  • If far point of a long sighted person is ‘x’. The focal length of the lens he has to use is …………

  • The minimum focal length of eye lens for the person of hypermetropia is greater than …………

  • A doctor has advised to use 2.5D lens. The focal length of the lens is …………

  • Ramu can read a book perfectly well but cannot read the writing on black board unless he sits on the front row in class. Name the defect he has …………