MCQ questions for class 10 Science Chapter 11 The Human Eye and the Colourful World
Question 1: Which part of the eye is responsible for controlling the amount of light entering the eye?
Cornea
Iris
Retina
Lens
Question 2: What is the function of the retina in the human eye?
To control the amount of light entering the eye
To refract light
To convert light into electrical signals
To focus light on the retina
Question 3: Which part of the eye is responsible for the formation of the blind spot?
Cornea
Iris
Retina
Optic nerve
Question 4: What is the function of the ciliary muscles in the eye?
To control the size of the pupil
To change the shape of the lens
To produce tears
To protect the eye from dust and foreign particles
Question 5: What is the name of the transparent, front part of the eye that helps in focusing light?
Cornea
Iris
Retina
Lens
Question 6: Which part of the eye helps in the accommodation of the eye?
Cornea
Iris
Retina
Lens
Question 7: What happens to the size of the pupil in bright light?
It dilates
It remains the same
It constricts
It disappears
Question 8: Which part of the eye is responsible for the sharpness of vision?
Cornea
Iris
Retina
Lens
Question 9: What is the role of the aqueous humor in the eye?
To refract light
To focus light on the retina
To nourish the cornea and lens
To control the size of the pupil
Question 10: What is the name of the phenomenon due to which stars twinkle?
Refraction
Dispersion
Scattering
Atmospheric refraction
Question 11: Which color of light is deviated the least during dispersion?
Red
Blue
Green
Violet
Question 12: What is the cause of the formation of a rainbow?
Refraction
Reflection
Dispersion
Scattering
Question 13: What is the function of the lens in the eye?
To control the amount of light entering the eye
To focus light on the retina
To convert light into electrical signals
To protect the eye from dust and foreign particles
Question 14: What is the name of the phenomenon due to which a person in a swimming pool appears to be raised?
Refraction
Reflection
Dispersion
Scattering
Question 15: Which part of the eye is responsible for the production of tears?
Cornea
Iris
Lacrimal gland
Lens
Question 16: Which part of the eye is responsible for the perception of colors?
Cornea
Iris
Retina
Lens
Question 17: What is the function of the vitreous humor in the eye?
To refract light
To focus light on the retina
To nourish the cornea and lens
To maintain the shape of the eye
Question 18: What is the name of the condition in which a person cannot see distant objects clearly?
Myopia
Hypermetropia
Astigmatism
Presbyopia
Question 19: What is the name of the condition in which a person cannot see nearby objects clearly?
Myopia
Hypermetropia
Astigmatism
Presbyopia
Question 20: Which part of the eye contains photoreceptor cells?
Cornea
Iris
Retina
Lens
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