Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

Using the data given below, state as to which of the given lenses will you prefer to use as i) an eyepiece, ii) an objective to construct an astronomical telescope. Give reason for your answer. Lens Power Aperture L1 1 D 0.10m L2 10 D 0.05m L3 10 D 0.02m L4 20D 0.02m
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

For an astronomical telescope

 i.  L4 should be used as eye piece because of its smallest focal length

 ii.  L1 should be used as objective because of its largest aperture.

Answered by | 04 Jun, 2014, 03:23: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 12-science - Physics
Optical instrument
question image
Asked by tannudahiya80536 | 20 Dec, 2022, 01:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
derive the expression for the magnifying Power and the length of a compound microscope using two convex lenses.
Asked by kamleshstarone392 | 16 Apr, 2022, 06:26: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
derive an expression for the magnifying power of an astronomical telescope in normal adjustment?
Asked by shijurlytepz | 12 Oct, 2021, 06:56: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Define and write expression for magnifying power of an astronomical telescope in normal adjustment (i,e, when the final image is formed at infinity)  
Asked by khanhill543 | 31 Dec, 2020, 12:20: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Find the maximum magnifying power of a compound microscope having a 25 diopter lens as the objective, a 5 diopter lens as the eyepiece and the separation 30 cm between the two lenses. The least distance for clear vision is 25 cm.
Asked by ABHILASHA | 15 Sep, 2020, 06:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
the magniuifying power of a telescope is 9. when it adjusted for parallel rays the didtance b/w the eye piece and  objective lens is 20cm find the focal length of both lenses
Asked by akgujrati04 | 22 Aug, 2020, 07:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
which mirror does used in microscope and why?
Asked by mazhartahsildar143 | 02 May, 2020, 01:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Is combination of a mirror and lens in syllabus of class 12? 
Asked by govtsecschoolnayaganv051 | 24 Feb, 2020, 04:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Derivation of compound microscope
Asked by phenomenal1ajisback | 20 Feb, 2020, 08:08: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
astronomical telesccope  with full explaination
Asked by singhalakash8958 | 03 Mar, 2019, 10:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×