Advertisements
Advertisements
Question
Given below is a diagram depicting a defect of the human eye, study the same and then answer the questions that follow:
(i) Name the defect shown in the diagram.
(ii) What are the two possible that cause this defect?
(iii) Name the type of lens used to correct this defect.
(iv) With the help of a diagram show how the defect shown above is rectified using a suitable lens.
Advertisements
Solution
(i) Myopia
(ii) Two possible reasons are
- Eye ball is lengthened from front to back.
- Lens is too curved.
(iii) Concave lens
(iv)
APPEARS IN
RELATED QUESTIONS
Explain how the human ear works.
Explain the following:
Mechanism through which a sound produces a nerve impulse in the inner ear.
find odd one from following: Malleus, iris, Stapes, Incus.
Where is the oval window located? Briefly mention its function.
Name the three ear ossicles.
With reference to the human ear, answer the question that follow:
Name the nerve, which transmits messages from the ear to the brain.
The diagram alongside represents the structure of the human ear.
(i) Write the names of the parts labelled a to g.
(ii) State briefly the functions of the parts b, d, and g.
(iii) Name the main division of the ear.
(iv) Which is the smallest bone in the human body?
(v) What is labyrinth?
Given below is a diagram of a part of the human ear. Study the same and answer the question that follow:
Name the audio receptor region present in the part labeled 'A'.
Choose the odd one out from the following terms and name the category to which the others belong:
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Eyes: Photoreceptors :: Ears : ______.
