© examsnet.com
Question : 22
Total: 30
(i) Draw a labelled ray diagram showing the formation of a final image by a compound microscope at least distance of distinct vision.
(ii) The total magnification produced by a compound microscope is 20 . The magnification produced by the eye piece is 5 . The microscope is focussed on a certain object. The distance between the objective and eye-piece is observed to be14 cm 20 cm
(ii) The total magnification produced by a compound microscope is 20 . The magnification produced by the eye piece is 5 . The microscope is focussed on a certain object. The distance between the objective and eye-piece is observed to be
Solution:
(i)
(ii) Fromm = m 0 × m e
m 0 =
=
= 4
Now,m 0 =
=
= 4
f 0 =
=
= 3.5 cm
Also,m e = 1 +
= 5
= 5 − 1 = 4
f e =
=
= 5 cm
(ii) From
Now,
Also,
© examsnet.com
Go to Question: