(a) Give reasons for the following
(i) Colour of the clear sky is blue.
(ii) The sun can be seen about two minutes before the actual sunrise.
(iii) We cannot see an object clearly if it is placed very close to the eyes.
(b) What is Presbyopia? Write two causes of this defect.
Answers
Answered by
5
Answer:
are you in 10th std because I am also in 10th
Answered by
3
Answer:
a
(1) The colour of the sky is blue due the reflection of light from the ocean .
(3) Because Near point of eye is 25cm . So we cannot see that object which is placed below 25cm .
b
Presbyopia is a normal part of the aging process. It occurs due to hardening of the lens of the eye, causing the eye to focus light behind rather than on the retina when looking at close objects.
Similar questions