An object of size 7.0 cm is placed at 27 CM in front of a concave mirror of focal length 18 cm.At what distance from the mirror should a screen be placed, so that I sharp focus image is obtained? find the size and nature of the image.
Answers
Answered by
2
Ho=7cm
u= -27cm
f= -18cm
v=?
Hi=?
Mirror formula:1/f=1/v+1/u
-1/18=1/v-1/27
1/v=1/27-1/18
1/v=-1/54
v=-54cm
Magnification: -v/u=Hi/Ho
-(-54)/-27=Hi/7
Hi=-14cm
Hope it helps.
u= -27cm
f= -18cm
v=?
Hi=?
Mirror formula:1/f=1/v+1/u
-1/18=1/v-1/27
1/v=1/27-1/18
1/v=-1/54
v=-54cm
Magnification: -v/u=Hi/Ho
-(-54)/-27=Hi/7
Hi=-14cm
Hope it helps.
Answered by
4
•GIVEN:-
SOLUTION :-
•The screen should be placed at a distance of 54cm in front of the given mirror
•Negative value of magnification shows that image is real.
➽The height of the image is negative which shows that image is inverted.
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