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The direction of the path in which light is travelling is called a/an……..
a) beam

b) ray                     

c) arrow

d) line


The ray model of light assumes that light travels in ………line.
a) curved                                              

b) circular
c) oblique                                             

d) straight


According to the ray model, when we see an object, light reaches our eyes from……point on the object.
a) center                                               

b) corner
c) top                                     

d) each point


The method of following individual rays as they travel from an object to our eye or to some other point is called……..
a) transmission of light  

b) absorption of light
c) ray tracing     

d) none of these


We can see luminous objects from ……….
a) the light they reflect  

b) the light they emit
c) the light they transmit

d) none of these


We can see non-luminous objects from ………
a) the light they reflect

b) the light they emit
c) the light they transmit
d) the light they absorb