give reason: (3 marks each)
1. It is advised in traffic rules that pedestrians should wear white clothes during the night. why?
2.Why is normal eye not able to see clearly he objects placed closer than 25cm?
1) White reflects most light complete ly .
2)The lens in our eye has the ability to abjust its focal length.
Amore curved surface (less focal length ) is needed to focus light from nearer objects that our eye can not support.