Consider the following two statements A and B and identify the correct choice in the given answers.
A) In Huygens' eyepiece, the two plane surfaces of two plano - convex lenses face towards the eye
B) In Huygens' eyepiece the focal length of the field lens is equal to the focal length of the eye lens
Both A and B are true
A is true but B is false
A is false but B is true
Both A and B are false
A
A is false but B is true
B
Both A and B are true
C
A is true but B is false
D
Both A and B are false
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Solution
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In Huygen's eye piece consist of two Plano - convex lenses with the plane sides towards the eye separated by an air gap. In Huygen's eyepiece the focal length of the field lens is three times to the focal length of the eye lens.
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Similar Questions
Q1
Consider the following two statements A and B and identify the correct choice in the given answers.
A) In Huygens' eyepiece, the two plane surfaces of two plano - convex lenses face towards the eye
B) In Huygens' eyepiece the focal length of the field lens is equal to the focal length of the eye lens
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Q2
Consider the following two statements A and B and identify the correct choice in the given answers: A) The curved surface of plano-convex lenses in Ramsden's eyepiece face each other. B) The focal length of field lens is 3 times the focal length of eye lens in Ramsden's eyepiece.
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Q3
In the case of Huygens eyepiece, the ratio of focal length of eye lens, effective focal length and length of the eyepiece is :
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Q4
The focal length of field lens is 4.5 cm. Then the equivalent focal length of a Huygens eyepiece is:
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Q5
The effective focal length of Huygens eyepiece is 3cm. The focal power of field lens is