MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Magnification in Thin Lens

The focal len...

Question

The focal lengths of the objective and eye-piece of a compound microscope are $1$ cm and $5$ cm respectively. An object is placed at a distance of $1.1$ cm from the objective has its final image formed at least distance of distinct vision, then the magnifying power is

A

20

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

30

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

50

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

60

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is A $60$
$f_{0} = 1 c m$

$f_{e} = 5 c m$

$v_{0} = 1.1 c m$

$v_{e} = 25 c m$

$M = ?$

$M = \frac{v_{0}}{u_{0}} (1 + \frac{D}{f_{e}})$

$\frac{1}{v_{0}} - \frac{1}{(- 1.1)} = \frac{1}{1}$

$v_{0} = 11 c m$

$M = \frac{11}{1.1} (1 + \frac{/ 25^{5}}{/ 5}) = 6 \times 10 = 60$

Suggest Corrections

thumbs-up

0

Similar questions

Q. The focal length of the objective and eye piece of a compound microscope are

1 c m

5 c m

respectively. An object is placed at a distance of

1.1 c m

from objective. If final image is formed by at least distance vision, the magnifying power is:

Q. A compound microscope has a magnifying power

48

. The focal length of its eye-piece is

5 c m

. If final image is formed at least distance of distinct vision

(25 c m)

then magnification of objective lens is

Q. A compound microscope has a magnifying power 30. The focal length of its eye-piece is 5 cm. Assuming the final image to be at the least distance of distinct vision. The magnification produced by the objective will be

Q. When the object is placed 4 cm from the objective of microscope, the final image formed coincides with the object. The final image is at the least distance of distinct vision (24 cm). If magnifying power of microscope is 15, the focal lengths of objective and eye-piece is

Q. A compound microscope has an eye piece of focal length

10 c m

and an objective of focal length

4 c m

. Calculate the magnification, if an object is kept at a distance of

5 c m

from the objective so that final image is formed at the least distance vision

(20 c m)

.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

PHYSICS

Watch in App

explore_more_icon

Explore more

Magnification in Thin Lens

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon