How to take out focal length for a hypermetropic eye of near point 50cm
Answers
Answered by
0
hey ! this type of questions would be not asked for exams . just keep concept in mind .
Hope it helps
Hope it helps
sanjayvishnoidon36:
Haa bhai.. board me aaya tha
see set 1 science board 2019
Answered by
1
HEYA MATE....
for a hypermetropic eye
u=-25cm and v=-50cm
u=-25cm and v=-50cm
substituting in the lens formula we get focal length is...
f=50cm =0.5m
HOPE IT WILL HELP YOU......
Image is positive in convex lens
And uv taken -ve....why
image distance is +ve for real image and negative for virtual image
Ha lekin... Hypermetropic me convex hota h...use.....usme khali 1 case me v= -ve hota h ...baki sb v = +ve
yah but object is on front of lens so u is -ve
and lens ka kam yeh hoga ki wo person object ko bhi clearly dekh paye
so lens image ko 50 cm par form karega at left side only
thus it is taken as negative
through which the person can see clearly
draw the lens diagram u can find...
Similar questions