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प्रश्न
To focus the image of a nearby object on the retina of an eye:
(a) the distance between eye-lens and retina is increased
(b) the distance between eye-lens and retina is decreased
(c) the thickness of eye-lens is decreased
(d) the thickness of eye-lens is increased
उत्तर
he thickness of the eye lens is increased
The thickness of the eye lens is increased to focus the image of a nearby object on the retina of the eye.
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संबंधित प्रश्न
Draw a labelled sketch of the human eye.
The optical prescription for a pair of spectacles is :
Right eye : −3.50 D
Left eye : −4.00 D
Which lens has a greater focal length?
What do the ciliary muscles do when you are focusing on a nearby object?
The descriptions of five kinds of images are given below:
(a) diminished and virtual
(b) enlarged and real
(c) enlarged and erect
(d) real and inverted
(e) virtual and the same size
Which one of these describes the image formed:
(i) on the retina of the eye?
(ii) by a magnifying glass?
(iii) by a convex driving mirror on a car?
(iv) by a plane mirror?
(v) on the screen of a slide projector?
With reference to the functioning of the eye, answer the question that follow:
Name the cells of the retina and its respective pigments which get activated in the dark.
Choose the correct answer :
The rods and cones of a vertebrate retina function is to _________
Mention, if the following statement is True or False
Cones are the receptor cells in the retina of the eye sensitive to dim light.
The coloured portion of the eye is the ______.
Arrange and rewrite the term in group in correct order to be in a logical sequence, beginning with the term that is underlined:
Pupil, Aqueous humour, Retina, Vitreous humour.
With reference to human eye answer the question that follow:
Name the part of the eye associated with the regulation of the shape of lens.
