Class 10th Science MCQ


1) What is the main function of the cornea in the human eye?

A) To focus light

B) To secrete tears

C) To provide oxygen and nutrients

D) To protect the eye


What is the name of the structure in the eye that is responsible for controlling the amount of light entering the eye?

A) Retina

B) Pupil

C) Iris

D) Lens


2) What is the main function of the retina in the eye?

A) To focus light

B) To adjust the amount of light

C) To convert light into electrical signals

D) To secrete fluid


3) What is the name of the fluid that fills the anterior and posterior chambers of the eye?

A) Aqueous humor

B) Vitreous humor

C) Retinal fluid

D) Corneal fluid


5) What is the role of the optic nerve in the eye?

A) To send light signals to the brain

B) To control eye movement

C) To regulate the amount of light entering the eye

D) To maintain the shape of the eye


6) What is the name of the muscle in the eye that changes the shape of the lens to focus on objects at different distances?

A) Ciliary muscle

B) Retinal muscle

C) Optic nerve muscle

D) Pupillary muscle


7) Which of the following is NOT a common cause of near-sightedness?

A) Genetics

B) Prolonged use of digital devices

C) Aging

D) Exposure to bright light


8) What is the name of the disorder in which the cornea has an irregular shape, causing blurred or distorted vision?

A) Cataracts

B) Glaucoma

C) Astigmatism

D) Macular degeneration


9) What is the name of the membrane that covers the front of the eye and helps to protect it from dust and debris?

A) Cornea

B) Conjunctiva

C) Sclera

D) Choroid


10) What is the name of the disorder in which the pressure inside the eye increases, damaging the optic nerve and causing vision loss?

A) Cataracts

B) Glaucoma

C) Astigmatism

D) Macular degeneration


Answers:


A) To focus light

C) Iris

C) To convert light into electrical signals

A) Aqueous humor

A) To send light signals to the brain

A) Ciliary muscle

D) Exposure to bright light

C) Astigmatism

B) Conjunctiva