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Chemistry, 03.11.2019 21:31 jentho2012
14. we can see objects when the light reflected from the object falls on our eyes. why can’t walls act as mirror even when the light is reflected through the walls and reach our eyes?
15. how long does it take the light from the nearest star other than the sun to reach earth?
(timss)
a. less than 1 second
b. about 1 hour
c. about 1 month
d. about 4 years
16.a refracting telescope uses a concave and a :
a. concave mirror
b. convex lens
c. both a and c
d. convex mirror
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