Question

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

• A. Both A and B are true
• B. A is true but B is false
• C. A is false but B is true
• D. Both A and B are false

Answer 1

The correct option is B A is true but B is false

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.