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SAI INTERNATIONAL SCHOOL
                                                          Class8
                                                  Home Assignment
                                                   Subject-Physics
                                                        CH- Light
                                  Subtopic- Reflection and Laws 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.
                   1.    Assertion: A ray of light incident, perpendicular to the reflecting surface           1
                         retraces its path.
                         Reason: Angle of incidence is equal to angle of reflection.
                   2.    Assertion: Light is a form of energy.                                                 1
                         Reason: When light falls on an object, some of the light is reflected back to our
                         eyes.
               Fill in the blanks
                   3.    The ray of light falling on a reflecting surface is called ____________.              1

                   4.    The perpendicular on reflecting surface at the point of incidence is called 1
                         ______________.

                   5.    A light ray strikes a surface at an angle 60 . The angle of reflection is             1
                                                                     0
                         _________.
               MCQ
                   6.    Angle between incident ray and normal ray is called angle of _______                  1
                            (a) reflection
                            (b) refraction
                            (c) transmission
                            (d) incidence
                   7.    We can see a non-luminous object when light:                                          1
                            (a) emitted by the object falls on the eye.
                            (b) is reflected from the object towards our eye.
                            (c) completely passes through the object.
                            (d) gets completely absorbed by the object.


                   8.    Suppose you are in a dark room. Can you see the objects in the room? Can 2
                         you see the objects outside the room? Explain.


                   9.    What is the speed of light in vacuum?                                                 1
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