wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

A person's near point is 50 cm and his far point is 3 m. Power of the lenses he requires for (i) reading and
(ii) for seeing distant stars are

A
– 2 D and 0.33 D
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
2 D and – 0.33 D
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
– 2 D and 3 D
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
2 D and – 3 D
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 2 D and – 0.33 D

For correcting the near point, required focal length

f=50×25(5025)=50 cm
so power p=10050=+2D

For correcting the far point, required focal length
f = -(far point of defective eye) = -3m

P=13D=0.33 D


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Power
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon