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

Question

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Answer 1

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.

Answer 2

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.

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

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.

In the case of Huygens eyepiece, the ratio of focal length of eye lens, effective focal length and length of the eyepiece is :

In Huygens' eyepiece ,

In Ramsden eye piece, the two plano convex lenses each of focal length f and separated by a distance 12 cm. The equivalent focal length(in cm) of the eye piece is

If the focal length of the eye lens in Ramsden's eyepiece is $f$ , then the focal length of the field lens and separation between the field lens and cross wires are respectively :

The focal length of field lens is 4.5 cm. Then the equivalent focal length of a Huygens eyepiece is:

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 eyeB) 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

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.

In the case of Huygens eyepiece, the ratio of focal length of eye lens, effective focal length and length of the eyepiece is :

In Huygens' eyepiece ,

In Ramsden eye piece, the two plano convex lenses each of focal length f and separated by a distance 12 cm. The equivalent focal length(in cm) of the eye piece is

If the focal length of the eye lens in Ramsden's eyepiece is f, then the focal length of the field lens and separation between the field lens and cross wires are respectively :

The focal length of field lens is 4.5 cm. Then the equivalent focal length of a Huygens eyepiece is:

If the focal length of the eye lens in Ramsden's eyepiece is $f$ , then the focal length of the field lens and separation between the field lens and cross wires are respectively :