Home
Class 11
PHYSICS
Using the data given below, state which ...

Using the data given below, state which two of the given lenses will you prefer to construct a best possible (i) telescope (ii) microscope. Also, indicate which of the selected lenses is to be used as an objective and as an eye piece in each case
Lenses,`L_1, L_2,L_3`
Power(P), 6 D,3 D, 10 D
Aperture (A), 1 cm, 8 cm, 1 cm.

Text Solution

Verified by Experts

For a telescope, lens `L_2` is chosen as objective, as its aperture is largest. The lens `L_3` is chosen as eye piece as its focal length is smallest.
For a microscope, lens `L_3` is chosen as objective because its focal length is smallest. Lens `L_1` serves as eye piece because its focal length is not largest. This is required to secure greater magnifying power of the microscope.
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    PRADEEP|Exercise (NCERT)Short Answer|6 Videos

  • RAY OPTICS

    PRADEEP|Exercise Long Answer (b)|15 Videos

  • RAY OPTICS

    PRADEEP|Exercise Short Answer(c)|18 Videos

  • PROPERTIES OF BULK MATTER

    PRADEEP|Exercise Multiple choice questions|7 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise Assertion- Reason Type questions|20 Videos

Similar Questions

Explore conceptually related problems

You are given two convex lenses of focal lengths 10 cm and 60 cm. To make a telescope, which of the two lenses will you use as object lens and which one as eye lens ?

You are given the following 3 lenses. Two construct an astronomical telescope which one will you used as eyepiece and which one as objective?

You are given two convex lenses of focal lengths 5 cm and 25 cm. Which one of these would you like to use as an objective in a telescope? Give reasons for your answer.

(a) Draw a labelled ray diagram to obtain the real image formed by an astronomical telescope is normal adjustment position. Define its magnifying power. (b) You are given three lenses of power 0.5 D , 4D and 10D to design a telescope. (i) Which lenses should be used as objective and eyepiece? Justify your answer. (ii) Why is the aperture of the objective preferred to be large ?

The focal length of objective and eye-piece of a compound microscope are 1 cm and 5 cm respectively. The microscope magnification is equal to 50. If the distance between two lenses is increased by 2 cm then the magnification is

Two thin lenses of powers 2D and 3D are placed in contact. An object is placed at a distance of 30 cm from the combination The distance in cm of the image from the combination is

Magnifying power of a simple microscope A is 1.25 less than that of a simple microscope B. If the power of the lens used in B is 25 D, find the power of lens used in A. Given that distance of distinct vision is 25 cm.