Monday, October 30, 2017

REFLECTION OF LIGHT TEST PAPER

1.      The mirror used in search lights is

(a) Concave                       

(b) Convex

(c) Plane                            

(d) None of these


2.      In order to have a very wide field of view, the mirror used in cars is

(a) Convex                        

(b) Plane

(c) Concave                      

(d) None of these


3.      Shaving mirrors are

(a) Convex mirrors           

(b) Concave mirrors

(c) Plane                            

(d) None of these


4.      The laws of reflection are true for

(a)    The plane mirror only

(b)   The concave mirror only

(c)    The convex mirror only

(d)   All reflecting surfaces


5.      When light falls on matter, it can produce

(a)    Mechanical effect      

(b) Chemical effect

(c)    Heating effect                        

(d) All the above  


6.      Air is not visible because it

(a)    Is nearby a perfectly transparent substance

(b)   Neither absorbs nor reflects light

(c)    Transmits whole of light

(d)   All the above are correct


7.      The nature of the image formed by a plane mirror is

(a)    Virtual and erect

(b)   Of the same size as the object

(c)    Laterally inverted

(d)   All the above are correct


8.      Which of the following mirror is used to concentrate light on a given spot?

(a) Concave mirror            

(b) Convex mirror

(c) Plane mirror                 

(d) None of these


9.      The concave mirrors are used in

(a)    Reflecting telescopes  

(b) Magic-lanterns

(c) Cinema projectors       

(d) All the above  

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