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SAI INTERNATIONAL SCHOOL
Class 7
Home Assignment
Subject-Physics
CH: Light and Associated Phenomena
Subtopic- Rectilinear Propagation & Types of Reflection
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.
Sl.No QUESTIONS MARKS
MCQ
Light travels in 1
a) Curved line
1 b) In circular path
c) In straight line
d) Zigzag path
Surface used to study reflection of light are 1
a) Rough
2 b) Black painted

c) Polished
d) None of these
We can see the objects only when 1
a) Reflected light reaches our eyes
3 b) The objects absorb all the lights.

c) The objects allow all the light to pass through them.
d) None of these
Fill in the blanks
4 The bouncing of light by any smooth surface, like a mirror, is called ___ 1
5 The reflection of light from a wooden surface is ___________ reflection. 1
Assertion: The nature of propagation of light is rectilinear. 1
6
Reason: Light travels in a curved path.
7 What is rectilinear propagation of light? 1
Give an example to show that the path of light is always straight and 1
8
never curved