Physics
Grade-10
Easy
Question
Which of the following options indicates the function of the part of the human eye shown below?
- Generates electrical signals when light is focused on it
- Protects the eye from external injuries
- Focuses the light rays entering the eyes onto the retina
- Transmits electrical signals to the brain
Hint:
The back of the eye has a screen called retina.
The correct answer is: Generates electrical signals when light is focused on it
The correct option is a)Generates electrical signals when light is focused on it.
Photoreceptors are specialized neurons in the retina which converts light into electrical signals that stimulate physiological processes. Signals from photoreceptors are sent to the brain for processing by the optic nerve
Related Questions to study
Physics
Which of the following options indicates the function of the part of the human eye shown below?
Which of the following options indicates the function of the part of the human eye shown below?
PhysicsGrade-10
Physics
A tree is located at a distance of 1 km from a person. Which of the following is true about the sight of the person?
i. The person can clearly see the tree as it is located between the near point and the far point.
ii. The person cannot see it clearly as it is away from the far point.
iii. The person will experience stress in his eyes.
A tree is located at a distance of 1 km from a person. Which of the following is true about the sight of the person?
i. The person can clearly see the tree as it is located between the near point and the far point.
ii. The person cannot see it clearly as it is away from the far point.
iii. The person will experience stress in his eyes.
PhysicsGrade-10
Physics
When a person sees an object located nearby, the ciliary muscles _____ which makes the lens _____, _____ the focal length of the lens.
When a person sees an object located nearby, the ciliary muscles _____ which makes the lens _____, _____ the focal length of the lens.
PhysicsGrade-10
Physics
The eye lens forms a _____ image of any object on the retina.
The eye lens forms a _____ image of any object on the retina.
PhysicsGrade-10
Physics
Which of the following shows the correct labeling of the diagram shown below?
Which of the following shows the correct labeling of the diagram shown below?
PhysicsGrade-10
Physics
The information about the image formed at the retina is carried by the optic nerves to the brain in the form of ______.
The information about the image formed at the retina is carried by the optic nerves to the brain in the form of ______.
PhysicsGrade-10
Physics
The ability of the eye lens to change its curvature is called its _____.
The ability of the eye lens to change its curvature is called its _____.
PhysicsGrade-10
Physics
A human eye can see clearly from ____ to ______.
A human eye can see clearly from ____ to ______.
PhysicsGrade-10
Physics
How does the iris control the amount of light entering the eye?
How does the iris control the amount of light entering the eye?
PhysicsGrade-10
Physics
A man wears a pair of spectacles of power +3.5. Which of the following statements is correct about him?
I. He is farsighted.
II. He wears concave lenses
III. The focal length of the lens of his spectacles is positive
IV. His near point is farther than 25 cm from his eyes without lenses
A man wears a pair of spectacles of power +3.5. Which of the following statements is correct about him?
I. He is farsighted.
II. He wears concave lenses
III. The focal length of the lens of his spectacles is positive
IV. His near point is farther than 25 cm from his eyes without lenses
PhysicsGrade-10
Physics
Which of the following parts of the eye focuses most of the light?
Which of the following parts of the eye focuses most of the light?
PhysicsGrade-10
Physics
The size of the pupil increases when ____.
The size of the pupil increases when ____.
PhysicsGrade-10
Physics
The power of the lens used by Roshan is +2.5 D. What type of lens does he use?
The power of the lens used by Roshan is +2.5 D. What type of lens does he use?
PhysicsGrade-10
Physics
In the whole process of seeing an object, the light undergoes ____ outside the eyes and ____ inside the eyes.
In the whole process of seeing an object, the light undergoes ____ outside the eyes and ____ inside the eyes.
PhysicsGrade-10
Physics
The power of the lens used by Priyanka is –2.25 D. Which of these eye defects she probably has?
The power of the lens used by Priyanka is –2.25 D. Which of these eye defects she probably has?
PhysicsGrade-10
