A person cannot see the objects clearly placed at a distance more than 40 cm. He is advised to use a lens of poer
Answers
Answered by
1
he will be suggested to use lens of power 2.5d
as 49cm=0.4m
power=1÷f
1÷0.4=2.5D
as 49cm=0.4m
power=1÷f
1÷0.4=2.5D
ankur6879:
please mark thank u
Similar questions