English

Given Below is a Diagram Depicting a Defect of the Human Eye. Study the Same and Answer the Question that Follow:

Advertisements
Advertisements

Question

Given below is a diagram depicting a defect of the human eye. Study the same and answer the question that follow:

Name the defect shown in the diagram.

One Word/Term Answer
Advertisements

Solution

Myopia, Short-sightedness.

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: The Nervous System and Sense Organs - Diagram Based Questions

APPEARS IN

ICSE Biology [English] Class 10 ICSE
Chapter 8 The Nervous System and Sense Organs
Diagram Based Questions | Q 14.1

RELATED QUESTIONS

Given below is a diagram showing a defect of human eye. Study it and answer the following questions.

(i) Name the defect shown in the figure.
(ii) Give reason for this defect of eye in human being.
(iii) Name the type of lens used to correct the eye defect.


In a Std. X class out of 40 students 10 students use spectacles, 2 students have positive power and 8 students have negative power of lenses in their spectacles.

Answer the following questions:

(1) What does the negative power indicate?

(2) What does the positive power indicate?

(3) Generally which type of spectacles do most of the students use?

(4) What defect of eyesight do most of the students suffer from?

(5) Give two possible reasons for the above defect.


Do you know that the corneal-impairment can be cured by replacing the defective cornea with the cornea of the donated eye? How and why should we organise groups to motivate the community members to donate their eyes after death?


A student is unable to see clearly the words written on the blackboard placed at a distance of approximately 4 m from him. Name the defect of vision the boy is suffering from. Explain the method of correcting this defect.

Draw ray diagram for the:-

(i) defect of vision and also

(ii) for its correction.


Differentiate between members of the following pair with reference to what is asked in bracket.

Myopia and hyperopia (cause of the defect)


Distinguish between the following pair of words:
Myopia and hypermetropia


The near point of the eye of a person is 50 cm. Find the nature and power of the corrective lens required by the person to enable him to see clearly the objects placed at 25 cm from the eye?


 Name the common defects of the eye.


Nearsightedness: elongated eyeball : : farsightedness: _______


When do we consider a person to be myopic or hypermetropic? Explain using diagrams how the defects associated with myopic and hypermetropic eye can be corrected?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×