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SAI INTERNATIONAL SCHOOL
Class8
Home Assignment
Subject-Physics
CH- Light
Subtopic- Parts of Human Eye

INSTRUCTIONS:
 For Assertion& Reason question follow the following directions.
DIRECTION: Each of these questions contains an Assertion followed by Reason. Read them
carefully and answer the question on the basis of following options. You have to select the one
that best describes the two statements.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of
Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If Assertion is incorrect but Reason is correct.
(e) If Assertion & Reason both are incorrect.
1. Assertion: Human eye is just like a camera. 1
Reason: Retina acts as the screen to obtain image.

2. Assertion: A person has blue eyes. 1
Reason: The colour of iris of eye of the person is blue.

Fill in the blanks
3. ______________ controls the size of pupil of an eye. 1

4. The lens in the human eye is a __________ lens. 1

MCQ
5. Part of the eye which controls the light entering is called 1
(a) iris
(b) cornea
(c) lens
(d) retina

6. Eyes of the nocturnal birds have large cornea and a large pupil. How does this 1
structure help them?
a) Allows less light to enter the eye
b) Allows more light to enter the eye
c) Filters the light entering the eye
d) Protects the eye

7. Which of the following statements is correct regarding rods and cones in the 1
human eye?
a) Cones are sensitive to dim light.
b) Cones are sensitive to bright light.
c) Rods are sensitive to bright light.
d) Rods can sense colour.