1) Choose the correct Properties of Light. a) Light is a form of energy. b) Light travels very slow. c) Light travels in only one direction from its source. d) Light always travels in a straight line. 2) Our shadow is longest at Noon. a) True b) False 3) Objects that give off light of their own are called_________? a) Refraction of light b) Dispersion of light c) Luminous objects 4) The sources of light that occur in nature and are not man-made are called_____? a) Artificial source of light b) Natural source of light c) Transparent objects 5) Moon is a luminous object. a) False b) True 6) A shadow is always formed in the direction opposite to the source of light. a) False b) True 7) The bending of light when it travels from one medium to another is called______? a) Refraction of light b) Reflection of light c) Dispersion of light 8) What will happen if one card is slightly shifted ? a) The flame will extinguish. b) The flame will not be seen as now the holes are not in order. c) A shadow will be formed 9) Objects that do not have their own light are called______? a) Non-luminous objects b) Luminous objects c) Opaque objects 10) When is our shadow shortest? a) In morning b) at noon c) In evening 11) The sources of light that are made by man are called______? a) Reflection of light b) Artificial source of light c) Natural source of light 12) The length of our shadow is_____in the mornings and evenings. a) largest b) shortest c) longest 13) The bouncing of light on hitting an opaque object is called____? a) Refraction o light b) Reflection of light c) Dispersion of light 14) The splitting of light into its seven colors when it passes through a prism is called Refraction of light. a) False b) True 15) The moon has its own light. a) False b) True 16) Moon is an example of luminous objects. a) True b) False 17) What is the full form of VIBGYOR ? a) Violet,Indigo,Blue,Grey,Yellow,Orange andRed b) Violet,Indigo,Blue,Green,Yellow,Orange and Red c) Violet,Indigo,Black,Green,Yellow,Orange andRed 18) Which is an example of Non-luminous objects ? a) desk b) Ground glass c) Glass 19) Why is our shadow shortest at Noon ? a) Because the sun is far away from us. b) Because the sun is directly over our head. c) Because a shadow is not formed. 20) What is the speed of light ? a) 3*108 km/s b) 3*106 m/s c) 3*108 m/s

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