Single Choice

The focal length of the objective lens of a compound microscope is

Aequal to the focal length of its eye piece
Bless than the focal length of its eye piece
Correct Answer
CGreater than the focal length of its eye piece
DAny of the above three

Solution

For a compound microscope $$f_{objective } < f_{eye\ piece}$$


SIMILAR QUESTIONS

Optics

In compound microscope, the focal length and aperture of the objective used is respectively

Optics

The focal length of the objective of a compound microscope is $$ { f }_{ 0 }$$ and its distance from the eye piece is $$L$$. The object is placed at a distance $$u$$ from the objective. For proper working of the instrument,

Optics

Answer the following questions: (a )The angle subtended at the eye by an object is equal to the angle subtended at the eye by the virtual image produced by a magnifying glass. In what sense then does a magnifying glass provide angular magnification? (b) In viewing through a magnifying glass, one usually positions ones eyes very close to the lens. Does angular magnification change if the eye is moved back? (c) Magnifying power of a simple microscope is inversely proportional to the focal length of the lens. What then stops us from using a convex lens of smaller and smaller focal length and achieving greater and greater magnifying power? (d) Why must both the objective and the eyepiece of a compound microscope have short focal lengths? (e) When viewing through a compound microscope, our eyes should be positioned not on the eyepiece but a short distance away from it for best viewing. Why? How much should be that short distance between the eye and eyepiece?

Optics

In a compound microscope, the focal lengths of two lenses are 1.5 cm and 6.25 cm. If an object placed at 2 cm from objective and the final image is formed at 25 from eye lens, the distance between the two lenses is

Optics

This abnormality occurs due to monosomy (2n - 1); the individual has 2n = 45 chromosomes with 44 + XO genotype

Optics

The image formed by an objective of a compound microscope is

Optics

In a compound microscope, the intermediate image is

Optics

A compound microscope has two lenses. The magnifying power of one is $$5$$ and the combined magnifying power is $$100$$. The magnifying power of the other lens is

Optics

In a compound microscope the object of $$f_0$$ and eyepiece of $$f_e$$ are placed at distance $$L$$ such that $$L$$ equals

Optics

If $$m$$ compound microscope $$m_{1}$$ and $$m_{2}$$ be the linear magnification of the objective lens and eye lens respectively, then magnifying power of the compound microscope will be

Contact Details