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SAI INTERNATIONAL SCHOOL
                                                          Class8
                                                  Home Assignment
                                                   Subject-Physics
                                                        CH- Light
                         Subtopic- Characteristics of image & Multiple 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: Virtual image cannot be obtained on a screen.                              1
                         Reason: Virtual image is always inverted.
                   2.    Assertion: An object is placed at 50 cm in front of a plane mirror. The distance      1
                         of image from the object is 1m.
                         Reason: Object distance = image distance in a plane mirror.
               Fill in the blanks
                   3.    A person 1m in front of a plane mirror seems to be ____________m away from 1
                         his image.
                   4.    If you touch your ___________ ear with right hand in front of a plane mirror it 1
                         will be seen in the mirror that your right ear is touched with ________.
               MCQ
                   5.    A toy is placed at 10 cm in front of a plane mirror. What is the distance of          1
                         image from the toy?
                            (a) 20 cm
                            (b) 40 cm
                            (c) 10 cm
                            (d) 30 cm
                   6.    Image formed by a plane mirror is                                                     1
                               (a) virtual, behind the mirror and enlarged.
                               (b) virtual, behind the mirror and of the same size as the object.
                               (c) real at the surface of the mirror and enlarged.
                               (d) real, behind the mirror and of the same size as the object.
                   7.    A candle is 30 cm high. What is the height of its image in a plane mirror?            1
                            (a) 10 cm
                            (b) 15 cm
                            (c) 30 cm
                            (d) 45 cm
                   8.    How many images of a candle will be formed if it is placed between two parallel 2
                         plane mirrors separated by 40 cm?
                   9.    How many images of an object will be formed when the object is placed 2
                         between two plane mirrors which are inclined at the following angles to one
                         another? (a)120    0  (b) 180 (c) 45 (d)60  0
                                                              0
                                                      0
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