Please select a subject first
Advertisements
Advertisements
Give Reason:
When you enter into a dark room from bright because of sunlight, you can not see things for a few seconds.
Concept: undefined >> undefined
Differentiate between:
Short-sightedness and Long-sightedness.
Concept: undefined >> undefined
Advertisements
Differentiate between:
Myopia and Hypermetropia.
Concept: undefined >> undefined
Draw a neat labeled diagram to show how hypermetropia can be rectified.
Concept: undefined >> undefined
Explain the Term: Hypermetropia
Concept: undefined >> undefined
Explain the Term: Presbyopia
Concept: undefined >> undefined
Explain the Term: Astigmatism
Concept: undefined >> undefined
Name the following:
The defect of the human eye caused due to the uneven surface of the cornea.
Concept: undefined >> undefined
Give Technical Term:
The path which responsible for protecting the eye from sweat.
Concept: undefined >> undefined
Give Technical Term:
The type of lens used to correct myopia is
Concept: undefined >> undefined
What type of lens is used to correct Astigmatism?
Concept: undefined >> undefined
What type of lens is used to correct Hypermetropia?
Concept: undefined >> undefined
Complete the following sentence with appropriate word :
An inability to focus on nearby objects due to loss of elasticity of the lens with age is called Iris.
Concept: undefined >> undefined
The diagram given below represents the cross-section of the human eye:
(i) Name the parts labeled 1—12.
(ii) What is the function of the part marked ‘10’?
(iii) What would happen if part ‘5’ is damaged or cut?
Concept: undefined >> undefined
Study the following diagram carefully and then answer the questions that follow. The diagram is depicting a defect of the human eye :
(i) Identify the defect shown in the diagram.
(ii) Give two possible reasons for the above defect.
Concept: undefined >> undefined
Given below is a diagrammatic representation of a defect of the human eye:
(i) Identify the defect.
(ii) Mention two reasons for the above defect.
(iii) State how the defect can be rectified.
(iv) Name the part of the eye responsible for maintaining the shape of the eyeball.
Concept: undefined >> undefined
With respect to human eye explain:
(i) How is the image formed on the retina?
(ii) How is the amount of light entering the eye-controlled?
(iii) What type of lens is used for the correction of ‘Long sight’ defect?
(iv) With the help of a ray, diagram show the defect of the eye and then its correction after the use of a lens.
Concept: undefined >> undefined
Mention, if the following statement is True or False
Hypermetropia is a defect of the eye caused due to the eyeball elongation
Concept: undefined >> undefined
