Never Be This Person #shorts

A person wears glasses of power -2.5 D . Is the person short sighted or long sighted ? What is the far point of the person without glasses ?

A person wears glasses of power - 2.5 D . Is the person short sighted or long sighted ? What is the far point of the person without glasses ?

Fill in the following blanks with suitable words : A person is short-sighted if his eyeball is too………….Spectacles with a ………….lens are needed. A person is long-sighted if his eyeball is too………. Spectacles with a……………….lens are needed. These focus light rays exactly on to the................

Fill in the blank by verb given in bracket. A vegetarian is a person who never …………….. meat (eat)

The faulty functioning of an endocrine gland can make a person very short or very tall. This gland is:

(a) What is short-sightedness ? State the two causes of short-sightedness (or myopia). With the help of ray diagram, show : (i) the eye-defect short-sightedness. (ii) correction of short-sightedness by using a lens. (b) A person having short-sight cannot see objects clearly beyond a distance of 1.5 m. What would be the nature and power of the corrective lens to restore proper vision ?