Advertisements
Advertisements
प्रश्न
The change in focal length of an eye lens is caused by the action of the ______.
पर्याय
pupil
retina
ciliary muscles
iris
उत्तर
The change in focal length of an eye lens is caused by the action of the ciliary muscles.
Explanation:
The ciliary muscles change the focal length of the eye lens by changing its shape.
APPEARS IN
संबंधित प्रश्न
What happens to the image distance in the eye when we increase the distance of an object from the eye?
Write the name.
The sensation on the retina persists for a while is
Write the name.
The persons which are unable to distinguish between different colours
Write an Explanation.
Persistence of vision
Identify and explain concepts given in this diagram.
The 'eye muscles' are controlled by which cranial nerves?
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 ____________.
The least distance of distinct vision for a normal eye is ____________.
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?
The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
In simple microscope ______ lens is used.
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.
Dark and light adaptation (pigments which will be regenerated).
