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प्रश्न
What happens to the image distance in the eye when we increase the distance of an object from the eye?
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उत्तर १
An image is formed on the retina even upon increasing an object's distance from the eye. For this, the eye lens becomes thinner, and its focal length increases as the object is moved away from the eye.
उत्तर २
Since the size of eyes cannot increase or decrease, the image distance remains constant. When we increase the distance of an object from the eye, the image distance in the eye does not change. The increase in the object distance is compensated by the change in the
focal length of the eye lens. The focal length of the eyes changes in such a way that the image is always formed at the retina of the eye.
संबंधित प्रश्न
The least distance of distinct vision for a young adult with normal vision is about ______.
Why is a normal eye not able to see clearly the objects placed closer than 25 cm?
The change in focal length of an eye lens is caused by the action of the ______.
Write the name.
The persons which are unable to distinguish between different colours
The eyes of the nocturnal birds like owls are having a large cornea and a large pupil. How does it help them?
Having two eyes facilitates in
A: Increasing the field of view
B: Bringing three-dimensional view
C: Developing the concept of distance/size
Then the correct option is/are
The ability of the eye lens to adjust its focal length to form a sharp image of the object at varying distances on the retina is called:
The focal length of the eye lens increases when eye muscles ____________.
A student sitting on the last bench can read the letters written on the blackboard but is not able to read/the letters written in his textbook. Which of the following statements is correct?
When light rays enter the eye, most of the refraction occurs at the
A piece of red glass is heated till its glows in dark. The colour of flowing glass would be:-
In the blind spot of the human eye ______.
Adjusting the focal length of the eye lens to view objects at different distances is done by ______.
Give the reason for the following:
A person from bright sunlight outside enters a poorly lit room and feels blinded for a short while.
The vitamin required for the synthesis of rhodopsin is ______.
Name the following:
Two types of adaptations.
Define the following term:
Adaptation
Differentiate between members of the following pair with reference to what is asked in the bracket.
Near and distant accomodation (shape of lens).
