Advertisements
Advertisements
Question
fill in the following blank with suitable word:
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..........
Solution
A person is short-sighted if his eyeball is too long. Spectacles with a concave lens are needed. A person is long-sighted if his eyeball is too short. Spectacles with a convex lens are needed. These focus light rays exactly on to the retina.
APPEARS IN
RELATED QUESTIONS
Answer briefly:
How do you perceive the colour of an object?
Explain why the image distance in the eye does not change when we change the distance of an object from the eye?
Give the scientific names of the following parts of the eye:
a clear window at the front of the eye.
Name the muscles of the eye responsible for the power of accommodation.
Give scientific reason:
We cannot clearly see an object kept at a distance less than 25 cm from the eye.
State the Function:
Conjunctiva
Choose the Odd One Out:
Long answer question
Draw the neat labelled diagram of the Sectional view of the human eye.
Write an Explanation.
Farthest distance of distinct vision
Which of the following is responsible for the adjustment of the size of pupil?
