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In Huygens' e...

Question

In Huygens' eyepiece ,

A

the cross wires are outside the eye piece.

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B

condition for achromatism is satisfied.

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C

condition for minimum spherical aberration is not satisfied.

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D

the image formed by the objective is a virtual image.

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Solution

The correct option is D condition for achromatism is satisfied.
In Huygen's eye piece the cross wires are not present.
It satisfies condition of achromation and codition for mininum spherical aberrations. In Huygen's eye-piece image formed by the objective is a real image.

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Similar questions

Q. From the following, the wrong statement(s) about Huygens' eyepiece is(are) :

a) Cross wires can be arranged
b) It cannot be used in biological instruments
c) Condition for achromatism is satisfied
d) Condition for spherical aberration is satisfied

Q. Which eye piece satisfies condition of minimum spherical aberration?

Q. Statement (S) : Using Huygens eyepiece measurements can be taken but are not correct
Reason (R) : The cross wires, scale and final image are not magnified proportionately because the image of the object is magnified by two lenses, whereas the cross wire scale is magnified by one lens only

Q. (A) : Huygens' eyepiece cannot be used in telescopes
(B) : There is no provision of cross wires in case of a Huygens' eyepiece

Q. What condition must be satisfied by two thin lenses kept in contact so that they form an achromatic doublet, i.e., a combination free from chromatic aberration?

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