Question:
The two lenses of an achromatic doublet should have
The two lenses of an achromatic doublet should have
Updated On: Apr 15, 2024
- equal powers
- equal dispersive powers
- equal ratio of their power and dispersive power
- sum of the product of their powers and dispersive power equal to zero
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
The two lenses of an achromatic doublet should have, sum of the product of their powers and dispersive power $=$ zero.
Was this answer helpful?
0
0
Top Questions on Optical Instruments
- Two different lenses are used in telescope because
- JEE Main - 2023
- Physics
- Optical Instruments
- A scientist is observing a bacteria through a compound microscope. For better analysis and to improve its resolving power he should. (Select the best option)
- JEE Main - 2023
- Physics
- Optical Instruments
- Irrespective of the position of the object on the principal axis, a concave lens always forms an image of nature
- AP POLYCET - 2023
- Physics
- Optical Instruments
- Usually Doctors, after testing for defects of vision, prescribe the corrective lens indicating their
- AP POLYCET - 2023
- Physics
- Optical Instruments
- Blue colour of the sky is due to the scattering of light by the molecules of
- AP POLYCET - 2023
- Physics
- Optical Instruments
View More Questions
Questions Asked in VITEEE exam
- Two identical blocks A and B, each of mass 'm' resting on a smooth floor are connected by a light spring of natural length L and spring constant K, with the spring at its natural length. A third identical block 'C' (mass m) moving with a speed v along the line joining A and B collides with A. the maximum compression in the spring is
- VITEEE - 2023
- work, energy and power
- Assertion :
The binding energy of the nucleus increases with the increase in atomic number.
Reason :
Heavier elements have a greater number of non-radioactive isotopes than radioactive isotopes. - The half-life of radioactive radon is 3.8 days. The time at the end of which \(\frac{1}{20}th\) of the Radon sample will remain undecayed is (given log10e=0.4343)
- Which element has more electron gain enthalpy among chalcogen group?
- VITEEE - 2022
- sulphur
- Coin is tossed till heads is obtained what is expectation of no. of coin tosses
- VITEEE - 2022
- Random Variables
View More Questions
Concepts Used:
Optical instruments
A device that processes light waves (or photons), either to enhance an image for viewing or to analyze and determine its characteristic properties is called an optical instrument (or "optic" for short).
Applications of Optical Instruments:
- Microscope - It is one of the most extensively used optical instruments comprised of only one lens or combination of the lenses for magnifying and inspecting bodies that are too small to be seen in detail by clear eyes. Earlier microscopes had only one lens, and are, therefore, called simple microscopes, but the present microscopes are accessible with at least two lenses and thereby, termed a compound microscope.
- Telescope - It is another remarkable optical instrument. It makes distant objects emerge nearer by using an arrangement of lenses or lenses and curved mirrors that is used to observe the objects by absorption, emission, and reflection of their electromagnetic radiation to furnish a magnified image. As they are used to view objects that are far away, they include at least two lenses.